FDA Cybersecurity Deficiency Letter? We Respond Point-by-Point
The FDA gives you 180 days to respond. Every week of silence shortens your remediation window - and a weak first response triggers another 90+ day round.
Whether the FDA called it a Deficiency Letter, an AINN (Additional Information Needed Notification), or an Additional Information Request - the cybersecurity findings are the same set of gaps we close every week. Senior US-based team, eSTAR-ready response, mutual NDA before the call, free 24-hour written strategy.
Point-by-point response to every cybersecurity finding
Each FDA finding gets a numbered response with the exact artifact, page reference, and Section 524B citation that closes it.
AINN / AIR / hold letter ready
Same playbook whether the FDA calls it an AINN, additional information request, or deficiency letter - we've responded to all of them.
Updated SBOM with VEX
Refreshed SPDX or CycloneDX SBOM with VEX statements addressing any CVE concerns the FDA raised.
Targeted re-test, not full re-scope
We pen-test only what the FDA asked about - fastest path to closing the file, not padding the invoice.
Reviewer-format cover letter
Structured exactly the way FDA cybersecurity reviewers expect: finding → response → evidence → location in submission.
Fixed fee, unlimited revisions
One quote covers the response and any follow-up exchanges until the cybersecurity file is closed. No retest invoices.
Common FDA findings
What FDA cybersecurity deficiencies usually look like
We've responded to hundreds of FDA cybersecurity deficiency letters. The findings cluster into the same handful of categories - these are the ones we close every week.
Missing or incomplete SBOM / VEX
Reviewer asks for a machine-readable SBOM (SPDX or CycloneDX) with VEX statements addressing every flagged CVE. We rebuild it to FDA expectations.
Threat model gaps
STRIDE-based threat model missing data-flow diagrams, trust boundaries, or mitigations traced to design controls. We refresh it end-to-end.
Insufficient pen test evidence
Reviewer wants vulnerability testing, fuzz testing, or penetration testing scoped to the device's actual interfaces. We run a targeted retest, not a full re-scope.
Section 524B traceability gaps
Missing traceability between Section 524B(b)(1)–(3) requirements and submission artifacts. We deliver a refreshed matrix the reviewer can check off.
SPDF / secure development process gaps
Secure product development framework documentation that doesn't show evidence of execution. We pair the SPDF with artifacts that prove it ran.
Postmarket plan gaps
Reviewer wants a credible coordinated vulnerability disclosure (CVD) process, SBOM monitoring plan, and patch cadence. We document what you'll actually do.
Blue Goat Cyber vs. the alternatives
What you actually get versus a generic pen test shop or doing it in-house against a regulatory clock.
Capability
Blue Goat Cyber
Generic pen test shop
In-house
Senior medical device cybersecurity engineers
Every project, US-based
Junior pen testers, rotating
Hard to hire and retain
FDA reviewer-format reports
eSTAR-attachable, 524B-mapped
Raw findings dump
Built from scratch each time
Unlimited retests until closed
Included, fixed fee
Billed per retest
Internal cycle cost
FDA submission track record
250+, zero cyber rejections
Rare medical device experience
First submission risk
Mutual NDA before first call
Standard
Usually after SOW
n/a
What happens after you book the call
1Day 0
Mutual NDA + 30-min call
We sign a mutual NDA before the initial call, then walk through your submission, the FDA findings, and the path to close them.
2Day 1
Written strategy + fixed-fee quote
You receive a point-by-point response strategy mapped to Section 524B and the FDA February 2026 final guidance, plus a fixed-fee quote.
3Weeks 2–4
Reviewer-ready response package
Updated SPDF, SBOM/VEX, threat model, targeted pen test, and cover letter - formatted the way FDA cybersecurity reviewers expect in eSTAR.
"Blue Goat closed every cybersecurity finding on our 510(k) in a single response round. Senior engineers, fixed fee, no surprises - exactly what we needed against the clock."
- VP Regulatory, Class II medical device manufacturer
Guaranteed cybersecurity clearance
If the FDA rejects your submission for cybersecurity reasons, we fix it at no additional cost. 250+ submissions, zero cyber rejections to date.
Mutual NDA before the call
We sign a mutual NDA before the initial call so you can share device details, architecture, and FDA correspondence freely.
Free written strategy in 24 hours
No sales pressure. After the call, you get a concrete written strategy mapped to Section 524B and the FDA February 2026 final guidance.
Senior US engineers, fixed fee
No offshoring, no junior hand-offs, no hourly billing. Unlimited revisions. Every artifact is eSTAR-ready.
Common questions
Who you're talking to
Christian Espinosa, Founder & CEO
MBA, CISSP · U.S. Air Force Academy graduate · 30+ years in cybersecurity
Christian personally scopes every engagement. 250+ FDA medical device submissions supported with a 100% cybersecurity success rate. Author of three books including Medical Device Cybersecurity: An In-Depth Guide.
30-minute call with a senior medical device cybersecurity expert. Mutual NDA signed before the call. Free written response strategy mapped to every FDA finding within 24 hours. Fixed-fee quote to close the file.