Secure Software Development for Medical Devices

Updated October 27, 2024

Patient safety comes first in healthcare. As software takes on more of the work inside medical devices, security matters more. Secure software development helps protect patients’ lives and sensitive medical data. This article covers why secure software matters in medical devices and outlines the principles, regulations, and strategies used to build safe, compliant software.

Understanding the Importance of Secure Software in Medical Devices

Software is now central to modern medical devices. It enables advanced functions and improves care. From pacemakers to insulin pumps, software makes these devices more capable and more precise.

But more connectivity also means more exposure. As medical devices connect to healthcare networks, they become targets for cyber threats. Insecure software can put patient safety and privacy at risk.

For example, in 2017, the U.S. Food and Drug Administration (FDA) issued a safety communication about vulnerabilities in certain pacemakers. Hackers could potentially exploit those flaws, affect device function, and put patients at risk. That incident made the need for secure software development in healthcare hard to ignore.

The Role of Software in Modern Medical Devices

Software in medical devices controls operations, processes data, and enables communication with other medical systems. Manufacturers need to understand how much device safety and reliability depend on software.

Software also connects devices to electronic health record (EHR) systems, which improves data exchange and care coordination. But that connection also creates security risk if vulnerabilities are not addressed.

Consider a wearable device that monitors a patient’s vital signs and sends the data to a provider’s EHR system. Clinicians may rely on that data to make treatment decisions. If the device software is insecure, an attacker could access it, alter the data, or inject false readings. That can lead to bad diagnoses and wrong interventions.

The Risks of Insecure Software in Healthcare

Insecure software in medical devices creates risks that range from patient harm to data breaches. Attackers can exploit vulnerabilities to disrupt device function, cause inaccurate diagnoses, alter dosage delivery, or disable the device entirely.

Unauthorized access can also expose or alter patient data, putting privacy and confidentiality at risk. One example is the ransomware attack on Hollywood Presbyterian Medical Center in 2016, which disabled the hospital’s electronic health record system and demanded a ransom.

Remote attack is another serious concern. Because many devices are connected, attackers can target them from anywhere. A device may be physically secure and still be vulnerable if its software is not.

Given how critical these devices are, healthcare organizations and manufacturers need to treat secure software development as basic operational discipline. That means regular updates and patching, thorough testing and validation, and security controls that reduce cyber risk.

Principles of Secure Software Development

Developing secure software for medical devices requires following specific principles and practices across the full development lifecycle. When security is built into each phase, manufacturers reduce vulnerabilities and lower risk.

Developers need to know the basics of secure coding. That includes understanding common flaws such as buffer overflows and injection attacks and using techniques that prevent or limit them.

One core practice is input validation. Software should treat incoming data as untrusted until proven otherwise. Validating and sanitizing input helps block exploitation. In medical devices, that matters because patient data integrity and confidentiality directly affect safety and privacy.

Security Measures in the Development Process

Secure coding is not enough by itself. Security controls need to be part of the development process. One example is threat modeling, which helps teams identify vulnerabilities and assess risk before release.

Teams should also run regular security testing and code reviews. Those steps help find and fix weaknesses before deployment. Real-world failures show why this matters. The Heartbleed vulnerability discovered in OpenSSL in 2014 came from a simple coding error but exposed sensitive information across millions of systems.

When manufacturers build these practices into development, they reduce risk, protect patient data, and support trust in the device.

Regulatory Compliance in Medical Device Software

Medical device software is subject to strict regulations and standards tied to patient safety and data privacy. Manufacturers need compliance to bring products to market and keep them there.

Overview of Relevant Regulations and Standards

The regulatory framework for medical device software includes international standards such as ISO 13485 and IEC 62304, which define requirements for developing and maintaining medical device software.

ISO 13485 is written for medical device manufacturers and provides a framework for implementing a quality management system. It covers areas such as risk management, design and development, and post-market surveillance. Following ISO 13485 helps manufacturers show they can produce safe and effective medical device software.

IEC 62304 focuses on software life cycle processes. It covers development, verification, validation, and maintenance. Compliance with IEC 62304 helps manufacturers follow sound software engineering practices, reduce software failure risk, and improve product quality.

Regulators such as the FDA in the United States and the European Medicines Agency (EMA) in Europe enforce guidance and requirements for medical device software development.

The FDA’s framework includes premarket requirements such as a 510(k) clearance submission or a pre-market approval (PMA) application. These processes involve close review of software safety, effectiveness, and compliance with applicable regulations.

In Europe, the EMA oversees the regulatory approval process for medical device software. The agency requires manufacturers to obtain a CE mark, showing compliance with the European Union’s Medical Device Regulation (MDR). MDR sets requirements for product safety, performance, and clinical evaluation.

Compliance as a Key Aspect of Software Security

Compliance is not just a legal checkbox. It is part of software security. Regulatory standards push teams to build security into development early, which lowers the chance of vulnerabilities, patient harm, and data breaches.

By following established regulations and standards, manufacturers can implement security practices such as encryption of patient data, secure authentication, and regular software updates to address emerging threats. These measures help protect sensitive information against unauthorized access and tampering.

Strategies for Ensuring Safety in Medical Device Software

Secure software development is ongoing. It takes a disciplined approach to identify and address risk and vulnerabilities. Safety strategies in medical device software protect both patients and sensitive medical data.

Risk Assessment and Management in Software Development

Thorough risk assessment during development helps teams identify threats and vulnerabilities early. Once risks are identified, developers can put the right controls and mitigation strategies in place.

Quality Assurance and Testing for Software Safety

Quality assurance and testing are core parts of software development. They confirm that the software works as intended and meets safety requirements. Rigorous testing helps uncover security flaws and functional issues before devices are deployed in clinical settings.

Future Trends in Secure Software Development for Medical Devices

As technology changes, so do the risks and opportunities in medical device software security. Teams need to keep up with new threats and technical shifts if they want to protect patients.

The Impact of Emerging Technologies

Emerging technologies such as artificial intelligence (AI) and the Internet of Things (IoT) create both benefits and risk in healthcare. AI-based software can improve diagnosis and treatment decisions, but it also introduces problems such as adversarial attacks against AI models.

AI in medical devices could significantly change patient care. For example, AI algorithms can analyze patient data, detect patterns, and predict possible health issues. That can support earlier intervention and better outcomes.

The growing use of IoT-connected medical devices also brings remote monitoring and better visibility. But it expands the attack surface and requires strong security controls.

IoT also allows medical devices to connect with electronic health records (EHRs), giving healthcare professionals real-time patient information. That can improve workflow, diagnosis, and treatment planning.

The Evolution of Security and Compliance Requirements

Security and compliance requirements for medical devices continue to change as new threats emerge. Regulators keep updating guidance to address those threats and strengthen cybersecurity requirements.

For example, the FDA’s premarket cybersecurity guidance issued in 2014 and expanded in 2018 reflects the growing focus on securing medical devices against cyber threats. Manufacturers need to adjust their development processes to meet these requirements.

The European Union’s Medical Device Regulation (MDR) implemented in 2021 adds stricter cybersecurity requirements for medical device manufacturers. The regulation is intended to improve patient safety by requiring stronger security measures and ongoing monitoring of medical device software.

Industry standards such as ISO 13485 and IEC 62304 also continue to guide secure software development for medical devices. Following those standards helps manufacturers apply best practices and include security throughout the software development lifecycle.

Conclusion

Secure software development is necessary for medical device safety and compliance. Manufacturers reduce risk by understanding the role of secure software, following secure coding principles, meeting regulatory requirements, and applying sound safety practices. As healthcare technology changes, teams need to keep up with new threats and changing security requirements to protect patients and maintain trust in medical devices.

Blue Goat Cyber, a Veteran-Owned business, provides B2B cybersecurity services with expertise in medical device cybersecurity, penetration testing, and compliance with HIPAA, FDA, SOC 2, and PCI standards. Contact us today for cybersecurity help.

Check out our medical device cybersecurity FDA compliance package.

Medical Device Cybersecurity FAQs

How do I get a quote for a medical device test from Blue Goat?

Please schedule a 30-minute Discovery Session with us so we can best understand your objectives.

What insights does Blue Goat Cyber provide related to software testing in the healthcare industry?

Blue Goat Cyber provides several key insights related to software testing in the healthcare industry, focusing on comprehensive methods for various software and medical devices. They emphasize the importance of governance in cybersecurity programs, ensuring that medical software complies with regulatory standards like FDA guidelines and HIPAA. Additionally, Blue Goat Cyber stresses proactive risk mitigation, including strategies for identifying and managing potential vulnerabilities in healthcare software. Their approach also includes educating healthcare organizations on cybersecurity risks and best practices, advocating for a culture of awareness and proactive security measures in the industry.

What are the security requirements that medical device applicants must now meet?

The U.S. Food and Drug Administration (FDA) has established specific cybersecurity requirements that medical device manufacturers must meet. These include:

1. Secure Product Development Lifecycle: Manufacturers are required to implement a secure product development lifecycle. This involves reducing the number and severity of vulnerabilities throughout the entire lifecycle of their devices, from design and development to distribution, deployment, and maintenance​.

2. Threat Modeling and Post-Market Vulnerability Management: Manufacturers must conduct threat modeling and outline plans for addressing post-market vulnerabilities. This includes patching and software updates to respond to potential security issues​​​.

3. Coordinated Disclosure of Exploits and Software Bill of Materials: Details of the methods for coordinated disclosure of exploits must be included. Manufacturers must also supply a software bill of materials (SBOM) that details all third-party commercial, open-source, and off-the-shelf software components used in their devices​​​.

4. Process and Procedures for Postmarket Updates and Patches: Companies must provide details on the processes and procedures for releasing postmarket updates and patches that address security issues. This includes regular updates and out-of-band patches for critical vulnerabilities​​.

These requirements apply to "cyber devices," which are defined as any devices that run software, have the ability to connect to the internet, and could be vulnerable to cyber threats. As of October 1, 2023, the FDA's refuse-to-accept policy comes into force for pre-market submissions that lack the required cybersecurity information​​​​.

Medical device manufacturers should familiarize themselves with the FDA's updated guidance document, "Cybersecurity in Medical Devices: Quality System Considerations and Content of Premarket Submissions," to ensure their products meet the required cybersecurity standards. Failure to meet these requirements could result in the FDA rejecting pre-market submissions​​.

What new policy has the FDA announced for medical device manufacturers?

According to the recent announcement by the FDA, medical device manufacturers are now required to adhere to a new policy related to cybersecurity. Under this policy, all new applicants for medical devices must submit a comprehensive plan that outlines how they will actively monitor, identify, and address potential cybersecurity issues. This plan should also include steps to ensure that the device in question is adequately protected.

Additionally, the FDA now mandates that applicants establish a reliable process that reasonably assures the device's security. This includes taking necessary measures to make security updates and patches available regularly and in critical situations. The applicants must also provide the FDA with a detailed software bill of materials, encompassing any open-source or other software utilized in their devices.

Overall, this new policy enacted by the FDA emphasizes the importance of cybersecurity in medical devices and aims to ensure that manufacturers take appropriate measures to safeguard patient safety and protect against potential cyber threats.

What is Blue Goat's methodology for medical device cybersecurity assessment for FDA compliance?

Blue Goat uses a two-step Assessment Evolution test/retest approach for optimal outcomes. Within each Evolution, in addition to the actual medical device assessment and testing components, we dedicate access to our cybersecurity team for report clarification and knowledge exchange, assisting in your understanding of the test findings and the remediation strategies.

Post-remediation of Evolution 1, we will again conduct the cybersecurity assessment and penetration test to assess the efficacy of addressing identified vulnerabilities. This second set of reporting demonstrates a stronger security posture and, therefore, a more impactful Letter of Attestation.

Our overall medical device security assessment and testing process involves four high-level phases:

1. Discovery
2. Security Boundary Definition
3. Security Risk Assessment
4. Mitigation Strategy

Medical Device Assessment Evolution 1

1. Preparation (Offsite). Before we travel to your facility, we prepare for the onsite visit. Our preparation consists of Discovery, such as a review of the following:

• Design documents
• Data flow diagrams
• Use cases
• Traceability matrix
• Security architecture
• User manuals
• Admin/maintenance manuals
• Installation procedures and guidance
• Risk assessment
• Hazard analysis
• Source code
• Total Product Life Cycle (TPLC) documentation
• Product photos
• Any other relevant device documentation

We get familiar with your product, build a plan of action, and develop the Test Plan and Test Cass before the onsite visit. This helps us use onsite time efficiently.

2. T esting (Onsite or at Blue Goat's facility). We travel to your facility to perform the cybersecurity assessment and penetration test against your medical device/system. Testing can also be performed at Blue Goat’s facility if you ship the equipment to us. Our testing consists of identifying all entry points into the system, such as Ethernet, Fiber, WiFi, USB, BTLE, Serial, and HDMI. We assess vulnerabilities associated with each entry point and the exploitation of initial and subsequent vulnerabilities. Any critical findings discovered will immediately be brought to your attention. In addition, due to the nature of our engagement, we can share our test results with you daily as an end-of-day update.

3. Reporting (Offsite). At the end of testing, we generate a medical device cybersecurity assessment and penetration test report that ranks our findings based on criticality. The report will include step-by-step exploitation steps, described with screenshots. The report also includes remediation guidance for each finding.

4. Report Presentation (Offsite). Once the report is completed, we securely send it to you and review it via Zoom.

Between Evolution 1 and Evolution 2, you will work on fixing issues identified in Evolution 1.

Medical Device Assessment Evolution 2​

When you are ready for us to retest the medical device, we repeat the applicable steps of Evolution 1 in Evolution 2. This will be completed onsite at Blue Goat or your facility.

At the end of Evolution 2, we will generate a Letter of Attestation that summarizes the medical device's scope, findings, and overall risk rating. The Letter of Attestation is intended to be shared with clients, auditors, regulators, etc.

What is the goal of a penetration test against a medical device?

Blue Goat understands the critical importance of securing your wired or wireless medical devices and protecting your business from cybercriminals. We aim to assess the cybersecurity posture of your devices comprehensively, enabling us to identify vulnerabilities and weaknesses in their networks and infrastructure. By conducting a thorough penetration test, we help reduce risk to patients and your organization.

During the penetration test, our team evaluates the security defenses of your medical devices and looks for possible entry points for cyberattacks. We examine hardware, software, peripherals, and all other input/output systems. Our experts fuzz, analyze, and test each area for flaws that could affect patient care or device integrity.

We also focus on common vulnerabilities and exposures (CVEs) seen in medical devices. We test whether kiosked applications can be bypassed to reach the underlying operating system. That work can take hours or days when exploitation requires chaining multiple flaws.

We also assess physical attack paths. That includes checking for alternate ports such as JTAG, UART, other unprotected ports, additional USB ports, and accessible hard drives.

Our testing also includes forensics and post-exploitation movement. We detonate payloads, pivot, and adjust operating systems to simulate real-world scenarios that could affect patient care. We also reverse engineer proprietary binaries and programs to look for sensitive keys and determine whether encryption uses static or dynamically created keys.

This penetration test gives you a full picture of your medical device’s vulnerabilities and weaknesses. We use the findings to provide recommendations for remediation and stronger defenses.

What is AAMI TIR57?

AAMI TIR57 is a technical information report focused on the principles for medical device security-risk management. It's a guideline from the Association for the Advancement of Medical Instrumentation (AAMI), an organization well-known for its work in medical devices.

Overview

AAMI TIR57, titled "Principles for medical device security-Risk management," offers a structured approach to managing cybersecurity risks in medical devices. This matters because medical devices, like any connected technology, can be vulnerable to cyber threats. The report gives guidance on implementing security measures throughout a device's lifecycle, from design and development through decommissioning.

The "Why"

TIR57 matters because it focuses on patient safety and data security. As medical devices become more interconnected and software-dependent, they become more exposed to cyber threats. Those threats can affect device functionality and lead to patient harm. TIR57 helps manufacturers and healthcare providers reduce that risk by establishing sound security practices.

Examples and Case Studies

Say a hospital uses networked medical devices such as heart rate monitors or insulin pumps. These devices are critical to patient care. If weak security allows them to be hacked, the result could be a data breach or a life-threatening event. Applying the principles of AAMI TIR57, such as conducting risk assessments and including cybersecurity in device design, helps prevent those outcomes.

For Blue Goat Cyber, understanding and implementing AAMI TIR57 supports services that align with these standards. That includes risk assessments, guidance on secure device design, and ongoing security support.

Connecting the Dots

AAMI TIR57 is more than a reference document. It is a framework for securing medical devices, which is a core part of healthcare cybersecurity. Using these principles in your services helps position Blue Goat Cyber as a provider that understands both security and the specific risks tied to medical devices.

Applying AAMI TIR57 can also strengthen communication with cybersecurity decision-makers in healthcare. They need partners who understand both the technical side of cybersecurity and the realities of medical device risk.

What is a Cybersecurity Bill of Materials (CBOM)?

A Cybersecurity Bill of Materials (CBOM) is an essential requirement enforced by the FDA from March 29, 2023, onwards for medical devices. It mandates medical device manufacturers to provide a comprehensive and accurate list of software and hardware components used in their devices, including any third-party software and open source components. This list, known as the CBOM, serves as a self-attestation by manufacturers, indicating the accuracy and completeness of the components used in their medical devices. One critical aspect of the CBOM is the inclusion of a Software Bill of Materials (SBOM), which ensures complete transparency regarding software components used in medical devices. Given the crucial nature of medical devices and the potential risks associated with cybersecurity, having a comprehensive and accurate SBOM is particularly vital in maintaining the security and integrity of these devices.

How can Blue Goat help in generating accurate SBOMs?

Blue Goat has a long-standing record of providing reliable and precise Software Bill of Materials (SBOMs) for its clients for over ten years. We have developed sophisticated tools that enable us to identify components, even at the snippet level, accurately. With our advanced string search algorithms, we can effectively detect all third-party and commercial components. Additionally, Blue Goat offers a comprehensive SBOM-as-a-service solution, which ensures that clients receive complete and accurate SBOMs in standard formats such as SPDX and CDX, which comply with the FDA's requirements. Moreover, Blue Goat can validate internally generated SBOMs or those created by their software supply chain partners, guaranteeing alignment with FDA regulations. By using our expertise and tools, Blue Goat can play a crucial role in assisting organizations to generate reliable and accurate SBOMs.

What's the difference in a CBOM and SBOM?

The terms "Cybersecurity Bill of Materials" (CBOM) and "Software Bill of Materials" (SBOM) are related concepts in cybersecurity and software management, often used to improve transparency and security for software products and systems, including medical devices. The main difference is scope:

1. Software Bill of Materials (SBOM): An SBOM is a detailed inventory of all components, libraries, and modules that make up a piece of software, including open-source and proprietary elements. Its purpose is to show users, developers, and security professionals what software is running in their environment. That transparency supports vulnerability management, license management, security analysis, and patch management.

2. Cybersecurity Bill of Materials (CBOM): A CBOM extends the SBOM concept by including not just software components but also hardware components, network dependencies, and other elements critical to understanding the cybersecurity posture of a device or system. A CBOM is especially relevant where the security of the full ecosystem, including physical components and network interactions, matters. In medical devices or industrial control systems, that broader view helps teams assess vulnerabilities, attack paths, and overall system risk.

In short, an SBOM focuses on software components, while a CBOM covers the broader set of elements relevant to cybersecurity. Both improve transparency and support better risk management.

What is the significance of SBOMs and SPDX in the present and future?

March 29, 2023, marked a significant milestone as the FDA began enforcing cybersecurity requirements for medical devices, urging manufacturers to comply with a Cybersecurity Bill of Materials (CBOM). A crucial element of the CBOM is the inclusion of a Software Bill of Materials (SBOM), which outlines the comprehensive list of software and hardware components utilized within medical devices. This encompasses not only internally developed software but also third-party software and open-source components.

The significance of SBOMs lies in their ability to enhance transparency and accountability in the supply chain of medical devices. By mandating medical device manufacturers to self-attest to the accuracy of their SBOMs, regulators can obtain a holistic view of the components employed in the production of these devices. This promotes better assessment and management of potential security vulnerabilities.

One of the recognized standards for SBOMs is the Software Package Data Exchange (SPDX) format. SPDX provides a consistent and standardized way to document and share SBOMs, enabling efficient communication between various stakeholders, including manufacturers, regulators, healthcare providers, and consumers. This universal language supports interoperability and simplifies the evaluation of SBOMs by allowing for easy comparison and analysis.

The significance of SBOMs and SPDX in the present and future lies in their ability to strengthen cybersecurity practices and improve transparency across industries, not just within the medical field. As highlighted by the National Telecommunications and Information Administration (NTIA), the implementation of SBOMs should extend beyond medical devices, becoming a common practice in other sectors as well. This indicates a growing recognition of the importance of understanding and managing the software components in all connected systems.

With the regulatory enforcement of SBOMs, companies across industries are actively working towards creating compliant SBOMs, with some seeking assistance from third-party providers who specialize in generating accurate and strong SBOMs. These providers, like Synopsys, offer sophisticated tools and solutions that can precisely identify software components used, including third-party and commercial components. They can also ensure that the generated SBOMs align with the specific requirements set forth by regulatory bodies, such as the FDA.

What are the additional elements required by the FDA for an SBOM?

The FDA has established additional requirements for a Software Bill of Materials (SBOM) for medical devices. In addition to the minimum elements defined by the National Telecommunications and Information Administration (NTIA), the FDA mandates including specific information. These additional elements encompass the support level, support end date, and known security vulnerabilities of the software components used in the medical devices.

While open source projects may not have designated support levels or support end dates, these additional elements largely apply to third-party or commercial components integrated within the medical device application. It is crucial to include complete and accurate SBOMs for medical devices, as they enable transparency and focus on cybersecurity.

How can Blue Goat Cyber help ensure that medical device software complies with required standards and regulations?

Blue Goat understands the need for compliance in medical device software. Our team is experienced in the security process and can help protect your organization from costly and dangerous hacks. With years of experience across multiple testing types, we can address the requirements of your specific device.

We also take compliance seriously. Our team can guide you through the regulatory requirements, including FDA expectations. We understand the importance of timely product releases, and our expertise helps you work through the steps needed to meet required standards and regulations.

With Blue Goat, your medical device software can meet the necessary compliance standards and support confidence in the safety and effectiveness of your product.

What tools does Blue Goat use for testing software for medical devices?

Blue Goat Cyber uses a combination of Static Application Security Testing (SAST) and Dynamic Application Security Testing (DAST) for medical device software testing. SAST involves analyzing the source code to identify vulnerabilities, while DAST tests the running application to find security issues. Both methods are critical for ensuring the security of medical devices, which handle sensitive data and are subject to strict FDA regulations and HIPAA guidelines. Blue Goat Cyber's approach addresses unique concerns related to medical devices, such as compliance with evolving security standards and the protection of critical patient information.

In addition to SAST and DAST, Blue Goat Cyber also incorporates penetration testing and vulnerability assessment tools for comprehensive medical device software testing. Penetration testing tools simulate real-world cyberattacks to identify potential security breaches, while vulnerability testing tools systematically scan for known vulnerabilities. Together, these methods provide a strong framework for ensuring the security and compliance of medical devices, addressing unique challenges such as critical functionality, data sensitivity, and regulatory standards like FDA clearance and HIPAA compliance​.

What is some background on medical device vulnerabilities?

Over the past few years, the Internet of Things (IoT), coupled with the ubiquitous nature of Information Technology, has resulted in an expanding attack surface where rapid solution development and enhanced functionality routinely prevail over security. For example, attackers once disrupted most U.S. internet activity using 61 default IoT usernames and passwords. Consumers failed to change them before activating their devices, effectively turning our gadgets into culprits responsible for one of the largest Distributed Denial of Service (DDoS) in the world’s history.

The healthcare industry is rapidly adopting IoT devices (often called the Internet of Medical Things (IoMT)) to improve patient safety and healthcare workers' treatment delivery. From medication administration to remote sensor monitoring, embedded medical devices are improving quality of care and increasing interaction with providers. While this technology was created with good intentions, the lack of security in product design phases is a major concern that will likely materialize into malicious action with grave consequences.

The consequences became clear in 2017 as researchers were able to acquire equipment (from $15 - $3,000) and intercept the radio frequencies from cardiac devices. With this capability, they could reprogram the devices to modify the patient’s heartbeat and drain the internal battery. As a result, the FDA recalled almost 500,000 pacemakers and enforced in-person firmware updates. Researchers have also demonstrated similar capabilities on infusion pumps and MRI systems.

Non-networked medical devices may be operating at a higher level of risk. Ease of access and the availability of RFID cloners contribute to a relatively weak physical security posture. In 2018, researchers demonstrated the capability to emulate and alter a patient’s vital signs in real time using an electrocardiogram simulator they found on eBay for $100.

In late 2018, the Department of Health and Human Services Office of the Inspector General (IG) critiqued FDA procedures in assessing post-market cybersecurity risk to medical devices. To strengthen the FDA's core mission “to ensure there is a reasonable assurance that medical devices legally marketed in the United States are safe and effective for their intended uses,” they outlined their ongoing efforts to improve medical device security.

According to the FDA, “Healthcare Delivery Organizations (HDOs) are responsible for implementing devices on their networks and may need to patch or change devices and/or supporting infrastructure to reduce security risks. Recognizing that changes require a risk assessment, the FDA recommends working closely with medical device manufacturers to communicate necessary changes.”

Blue Goat can help HDOs transfer that risk by evaluating the cybersecurity posture on your wired or wireless medical devices.

Contact us today and inquire about our full-range penetration testing.

We can significantly increase your patient’s safety while reducing your organization’s risk.

What are some reasons for the lack of security in many medical devices?

The lack of security in many medical devices can be attributed to several key factors. One significant factor is the increased scrutiny over the vulnerabilities of these devices, which ultimately forced regulatory bodies like the FDA to reassess their cybersecurity requirements. A report by the FBI revealed that a staggering 53% of digital medical devices and internet-connected products had critical vulnerabilities, exposing patients and medical providers to various security risks. These vulnerabilities were often found in unpatched and outdated devices, which served as the weak link in the cybersecurity chain. Moreover, research suggests that 88% of healthcare cyberattacks involved an IoMT (internet of medical things) device, further underscoring the urgent need for strong security measures.

Inadequate security controls in medical devices have long been a pressing issue. Many of these devices have been designed with a primary focus on their medical functions, with security measures being added as an afterthought, if at all. These "bolted on" security controls have proven to be inadequate, leaving vulnerabilities that malicious actors can exploit. Additionally, the lack of mandatory requirements and accountability in the past has contributed to the lax approach towards security in the industry. However, recent changes have brought about a much-needed shift in mindset. Introducing new regulations and the potential for costly fines for non-compliance have made it clear that the days of overlooking security are over.

What is the purpose of the new cybersecurity regulations implemented by the FDA?

The FDA's new cybersecurity regulations have been put in place to ensure the security of medical devices. Section 524B (c) of these regulations defines a device that falls within the scope of these requirements. According to this section, a device is considered to be within the regulations if it includes software that is validated, installed, or authorized by the sponsor of the device or within it. Additionally, the device must be able to connect to the internet and possess technological characteristics that have been validated, installed, or authorized by the sponsor. This definition highlights the potential vulnerability of these devices to cyber threats. The purpose of these regulations is to address these vulnerabilities and establish a higher level of accountability and responsibility among medical device manufacturers. By mandating compliance and introducing potentially costly fines for non-compliance, the FDA aims to ensure that these regulations have a tangible and meaningful impact on the security of medical devices. The focus on accountability signifies a shift from the previous voluntary compliance approach, making it clear that laxity in cybersecurity measures is no longer acceptable in the medical device industry.

What testing needs can Blue Goat Cyber cover?

Blue Goat Cyber is a reliable partner that can meet a wide range of testing needs, ensuring the utmost satisfaction of our clients. Our expertise extends to various areas, including penetration testing, network penetration testing, web application penetration testing, API penetration testing, HIPAA penetration testing, SOC 2 penetration testing, PCI penetration testing, application penetration testing, internal penetration testing, black box penetration testing, gray box penetration testing, white box penetration testing, and mobile application penetration testing.

We also offer specialized services to address the testing needs of medical device software. Our healthcare testing professionals verify the quality of medical device software requirements and conduct testing at the API, integration, and system levels. With a focus on security, we work to ensure that software architecture can withstand vulnerabilities.

To further improve the reliability and security of medical device software, our team performs software code review and code analysis. We also conduct user acceptance testing to confirm that the software meets the usability needs of healthcare professionals and end-users.

Our compliance experts, including FDA and HIPAA specialists, work closely with clients to help medical device software meet required standards and regulations. With detailed reporting and comprehensive test documentation aligned with ISO 13485 and ISO/IEC/IEEE 29119-3:2021, we provide transparency into testing activities.

In addition to healthcare and medical device software testing, we offer medical device cybersecurity, cyber threat awareness training, enterprise cybersecurity audit, static application security testing (SAST), dynamic application security testing (DAST), vulnerability assessment services, CISO-as-a-Service, physical security assessment, phishing services, and HIPAA security risk analysis (HIPAA SRA).

How can Blue Goat help organizations protect their assets and networks and produce safer medical devices?

Blue Goat offers solutions to help organizations protect assets and networks while producing safer medical devices. Organizations that work with Blue Goat can use a range of services and expertise to build a strong security testing program.

Through its experience in cybersecurity, Blue Goat can assess current security measures, identify vulnerabilities and risks in network infrastructure, and recommend strategies to improve overall security posture. Applying those measures helps organizations better protect assets and networks from cyber threats.

Blue Goat also provides specialized guidance to the healthcare industry to support the production of safer medical devices. The team understands the specific security challenges medical device manufacturers face and can provide targeted solutions to reduce those risks. That support can also help organizations meet FDA regulatory compliance requirements and industry best practices, lowering the chance of device vulnerabilities and data breaches.

What is the FDA's new requirement for connected medical devices?

The FDA has introduced a new requirement for connected medical devices, which went into effect on March 29, 2023. This requirement focuses on cybersecurity and aims to enhance the safety and security of these devices. One component of this requirement is the implementation of a Cybersecurity Bill of Materials (CBOM).

Under the CBOM, manufacturers of medical devices will need to attest to the accuracy of a comprehensive list of software and hardware components utilized in their devices. This list should include the components developed by the manufacturer and any third-party software and open-source components incorporated into the device.

Specifically, the FDA emphasizes the significance of a Software Bill of Materials (SBOM) within the CBOM framework. An SBOM is essential for connected medical devices as it provides a complete and accurate inventory of all software components used. It allows for better tracking of potential vulnerabilities and aids in efficient response and mitigation of any possible cybersecurity incidents.

By enforcing this new requirement, the FDA aims to ensure that manufacturers prioritize cybersecurity in developing and maintaining connected medical devices. Ultimately, this initiative seeks to enhance these devices' overall safety and security, benefiting healthcare professionals and patients alike.

How can cybersecurity vulnerabilities in medical devices lead to patient data breaches?

Patient Monitors: Devices monitoring vital signs like heart rate and blood pressure are susceptible to data interception and manipulation, posing a significant risk to patient data security. The vulnerabilities in these devices can be exploited by cyber criminals, allowing them to intercept and manipulate the data being collected. This manipulation can lead to misdiagnosis or delayed treatment, endangering the safety and well-being of patients.

MRI Machines: MRI machines play a critical role in diagnostic imaging. However, they are not immune to cybersecurity threats. Cyber-attacks targeting these machines can disrupt their operation, potentially leading to incorrect imaging data or even complete operational failure. Such disruptions can have serious consequences, affecting diagnosis accuracy and treatment plans.

Radiation Therapy Systems: The potential hacking of radiation therapy systems poses a significant threat to patient safety. These systems are used in the treatment of cancer patients, and any unauthorized access to their controls can result in incorrect radiation doses. This can have severe repercussions, either by delivering insufficient radiation for effective treatment or by subjecting patients to dangerously high doses, leading to serious harm.

Diagnostic and Imaging Equipment: Sophisticated medical equipment like CT scanners and ultrasound machines are not immune to cyber threats. If these devices are compromised, they can provide false diagnostic information, leading to incorrect treatment decisions. The manipulation of diagnostic data can have detrimental effects on patient care, potentially delaying appropriate treatment or subjecting patients to unnecessary procedures.

Surgical Robots: Surgical robots have revolutionized minimally invasive surgeries, but their reliance on precise controls makes them vulnerable to cyber-attacks. Unauthorized access or manipulation of these devices can result in loss of control or the manipulation of movements during surgery. Such interference can lead to surgical errors, compromising patient safety and potentially causing harm.

Defibrillators: External defibrillators are critical life-saving devices used in emergency situations. However, they are not immune to cybersecurity vulnerabilities. In the event of a cyber-attack, these defibrillators can be hacked to disrupt their lifesaving shocks or drain their batteries. Such malicious interference can render the devices useless during critical moments, jeopardizing patient outcomes.

Hospital Networking Equipment: While not directly involved in patient care, hospital networks are vital for the operation of all connected medical devices. A breach in network security can have widespread consequences, including dysfunction of medical devices and loss of critical patient data. The interconnected nature of healthcare systems magnifies the impact of a cyber-attack on networking equipment, potentially disrupting the entire healthcare infrastructure.

These vulnerabilities show the need for strong cybersecurity measures in healthcare. Up-to-date software, encryption protocols, and strong password security are necessary to protect patient data and support safe device operation.

What are the consequences of cyberattacks on medical devices?

The consequences of cyberattacks on medical devices are serious and can significantly affect patient safety and healthcare institutions. Direct interference with device operations can lead to incorrect treatment and severe health risks. These breaches create immediate danger and also erode confidence in the reliability and safety of medical devices and healthcare institutions.

Recovering from a cyberattack can be costly and time-consuming. It may involve device recalls, software upgrades, and legal implications. These actions are needed to address exploited vulnerabilities and reduce the chance of future breaches. Healthcare institutions must invest in strong cybersecurity measures to protect networked medical devices and patient health.

Another concern is the possibility of attackers gaining remote control of medical devices. That access could let them change device settings, deliver incorrect doses of medication, or disrupt life-support systems. The potential impact is life-threatening.

The medical profession needs to prioritize the security and safety of networked medical devices. Steps must be taken to reduce cyberattack risk, protect device integrity, and maintain patient trust in healthcare institutions.

What are networked medical devices and why is cybersecurity important for them?

Networked medical devices are interconnected devices used in healthcare settings that rely on wireless technologies. These devices play an important role in patient care, including insulin pumps, pacemakers, infusion pumps, patient monitors, MRI machines, and more. They allow doctors and healthcare professionals to remotely monitor and manage patients and support efficient, minimally invasive procedures.

But as these devices become more interconnected, cybersecurity risk rises. When networked medical devices are compromised, hackers can interfere with them. That creates a direct patient safety risk and can lead to serious harm or death. Several high-profile medical device hacking incidents have made that clear.

For instance, insulin pumps have been manipulated remotely, exposing patients to the risk of insulin overdose. Pacemakers, which regulate heart rhythms, have shown vulnerabilities that could let attackers alter heart rhythms or deplete the battery. The WannaCry ransomware attack on the UK's National Health Service also showed how cyberattacks on hospital networks can indirectly affect patient care and safety.

These cases show the need for stronger security protocols, regular software updates, and close monitoring. Those steps help protect patient safety and support the reliability of networked medical devices.

What recommendations are given to prevent medjacking and secure networked devices?

To prevent medjacking and ensure the security of networked devices, the following recommendations are provided:

1. Promptly address existing devices: Take immediate action to remediate any potential infections on your networked devices.

2. Swiftly implement software/hardware fixes: Develop a strategic plan to efficiently integrate and deploy the necessary updates and fixes provided by medical device manufacturers.

3. Seek expert consultation: Engage competent HIPAA consultants to evaluate and assess your compliance program, providing on-site guidance and expertise. If needed, request a quote for a thorough HIPAA audit.

4. Prioritize cybersecurity-minded vendors: Evaluate medical device vendors based on their commitment to cybersecurity. Choose vendors that allow you to modify passwords, offer regular updates, and are willing to conduct quarterly reviews with you.

5. Manage device access: Implement strict access control measures, particularly through USB ports. Consider utilizing one-way memory sticks to prevent the spread of infections among similar devices.

6. Establish secure network zones: Isolate devices within dedicated, secure network zones. Protect them further by implementing an internal firewall that only permits access to specific services and authorized IP addresses.

7. Address end-of-life for medical devices: Regularly assess the efficacy and longevity of your medical devices. Dispose of devices that are no longer supported by manufacturers or are unable to handle malware effectively. Prior to disposal, ensure the secure wiping or destruction of any patient data stored on the devices.

By following these recommendations, you can significantly reduce medjacking risk and improve the security of your networked devices.

Why don't traditional cyber defense tools work with medical devices?

Traditional cyber defense tools are not compatible with network connected medical devices for several reasons. First, these devices often lack the infrastructure needed to support installation and operation of security tools. Unlike standard computers or mobile devices, medical devices have limited processing power, memory, and storage capacity. That makes running resource-intensive security software impractical or impossible.

Applying software modifications to these devices can also be seen as tampering and may affect compliance with regulations set by the FDA. The FDA has emphasized the need for manufacturers to implement adequate security measures, but restrictions on device modification make post-production security improvements difficult.

Traditional security tools are also usually built for more common systems and networks. They may not address the specific vulnerabilities and technical constraints of medical devices, which limits their effectiveness against threats targeting those devices.

Because of the critical nature of medical devices and the risks from cybersecurity breaches, manufacturers need to build proper security tools directly into device design and production. That helps ensure devices are secure from the start and aligned with FDA requirements.

Who is responsible for maintaining security within medical devices?

Maintaining security within medical devices is the responsibility of manufacturers. The FDA emphasizes that manufacturers are required to stay diligent in identifying and addressing risks and hazards associated with their devices, including those related to cybersecurity. However, it is noted that not all manufacturers take this responsibility seriously.

What types of medical devices are at the highest risk of being hacked?

The types of medical devices that are most vulnerable to hacking are stationary devices. While it is unsettling to contemplate the possibility of internally embedded medical devices being hacked and tampered with, it is important to note that the primary motivation for hackers is financial gain rather than terrorism. These cybercriminals primarily target stationary devices because they present the highest potential for stealing valuable patient data in large quantities.

What is medjacking and how does it pose a threat to healthcare organizations?

Medjacking, also known as medical device hijacking, is a serious cybersecurity issue that puts healthcare organizations at risk. It involves hackers compromising networked medical devices, including consumer health monitoring devices, wearables, embedded devices, and stationary devices, which are all connected to the internet.

One of the primary reasons why medjacking poses a threat is the valuable patient health data that these devices contain. Stationary devices like medical x-ray scanners and chemotherapy dispensing stations are particularly vulnerable, as they hold sensitive information that cybercriminals can exploit. In fact, medical data carries a higher value in the black market compared to credit card data, making these devices an attractive target for hackers.

The main factor contributing to vulnerabilities in medical devices is the lack of security prioritization from manufacturers. These devices often do not come with strong built-in security measures, making them easy targets for hackers. Furthermore, the use of cyber defense tools is limited when it comes to medical devices, which increases the security risk.

The government has also not taken strong action against manufacturers or enforced strict security measures to reduce these risks. This lack of regulatory pressure leaves healthcare organizations more exposed to potential medjacking incidents.

Another challenge in addressing medjacking is the difficulty in patching and fixing vulnerabilities in devices that are constantly in use. Healthcare organizations rely on these devices for critical functions and may face logistical challenges in implementing necessary security updates.

The consequences of medjacking can be severe for healthcare organizations. They risk violating HIPAA regulations, which can lead to legal and financial penalties. Data breaches from medjacking incidents can also seriously affect patient data security and confidentiality.

To combat medjacking, healthcare organizations should take proactive measures. This includes remediating infected devices, seeking fixes and updates from manufacturers, consulting with HIPAA experts to ensure compliance, evaluating vendors with a strong focus on cybersecurity, managing device access, isolating devices in secure network zones, and properly disposing of outdated devices.

What is medical device software testing?

Medical device software testing is a critical process aimed at ensuring that software embedded within or designed to control medical devices functions accurately, reliably, and in compliance with regulatory standards. This testing verifies the software's adherence to its intended functionality, user interface, integration, and overall performance requirements as dictated by medical device regulations, such as the FDA's 21 CFR Part 11 and the internationally recognized IEC 62304 standard. The objective is multifaceted, encompassing the removal of defects in software architecture and code, ensuring the software meets strict regulatory compliance, and ultimately contributing to the production of world-class, safe medical devices.

Key components of medical device software testing include:

• Functional Testing: This evaluates the software's operational aspects to ensure it performs its intended functions correctly. It involves detailed testing of the software's features and capabilities.

• Device Verification Testing: It verifies that the device as a whole, including its software, meets all specified requirements. This testing ensures that the product is designed correctly and works as expected.

• Security Testing: Given the sensitivity of medical data and the potential impact of cybersecurity threats, testing for security vulnerabilities is essential. It helps in identifying and mitigating potential security risks.

• Interoperability Testing: This ensures that the medical device can operate compatibly and safely with other systems or devices. It's crucial for devices that are part of a larger ecosystem of medical equipment.

• Usability Testing: Focused on the human-device interaction, usability testing ensures that the device can be used efficiently, effectively, and satisfactorily by the intended users.

• Performance Testing: This assesses the software's stability, speed, and scalability under various conditions. It is crucial for ensuring that the software can handle its intended workload without failure.

• Compliance Testing: Ensures the software meets all relevant regulatory and industry standards, focusing on safety, quality, and reliability requirements specific to medical devices.

Medical device software testing follows a rigorous methodology that includes planning, requirement analysis, test case development, execution of tests, and thorough documentation throughout the testing cycle. This methodology is designed to identify and address any defects or anomalies in the software architecture, code, or performance before the device reaches the market, thereby ensuring the safety and efficacy of medical devices. The process involves a combination of automated and manual testing techniques and requires a deep understanding of both the technical and regulatory aspects of medical device development.

What are common medical device vulnerabilities?

Common medical device vulnerabilities encompass a range of issues that can compromise the safety, privacy, and effectiveness of medical devices. These vulnerabilities are often related to software flaws, outdated operating systems, or insecure interfaces, which cyber attackers can exploit to gain unauthorized access, steal sensitive data, or disrupt device functionality. Some of the most prevalent vulnerabilities include:

• Insecure Network Connections: Many medical devices connect to healthcare networks via Wi-Fi or Bluetooth, making them susceptible to eavesdropping or unauthorized access if they are not properly secured.
• Outdated Software and Firmware: Devices running on outdated software or firmware are vulnerable to known exploits that have not been patched. This includes operating systems that are no longer supported by their vendors.
• Weak Authentication and Authorization Controls: Insufficient authentication mechanisms can allow unauthorized users to gain access to medical devices, potentially leading to misuse or the alteration of critical healthcare information.
• Lack of Encryption: Failure to encrypt sensitive data both at rest and in transit can expose patient health information (PHI) and other confidential data to interception and misuse.
• Third-Party Software Components: The use of vulnerable third-party software components can introduce additional risks, as device manufacturers may not always regularly update or patch these components.
• Configuration and Customization Errors: Improper configuration or customization of medical devices can leave them open to attacks. This includes default passwords never changed or security features that are disabled for convenience.
• Physical Security: Physical access to medical devices can also pose a threat, especially if devices are not adequately secured within the healthcare facility, allowing for tampering or theft.

Addressing these vulnerabilities requires a cybersecurity strategy that includes regular software updates and patches, strong encryption methods, authentication and authorization controls, and close monitoring of network connections. Collaboration between device manufacturers, healthcare providers, and cybersecurity professionals is also necessary to protect medical devices against emerging threats.