That single failure exposed every blind spot in vendor risk management. GPG vendor risk management is not just about encrypting files or signing messages. It’s about knowing, in absolute terms, whose keys you trust, how they are rotated, and the blast radius when something breaks.
Vendors are extensions of your infrastructure. Their security posture is your security posture. If a vendor’s GPG key expires without you knowing, your automation stops. If their key is compromised, your data can be stolen or poisoned before you detect the breach.
Strong GPG vendor risk management starts with a clear inventory of every vendor key your systems touch. Build a complete map — which services rely on them, where they are stored, and what processes fail if the signature chain breaks. Without that map, you are working blind.
Automated key validation is not optional. Continuous checks prevent silent failures. Combine that with strict expiration tracking. Define alerts for upcoming rotations so you don’t find out after the fact when your deployment suddenly halts or your CI/CD pipeline rejects a release.
Vendor onboarding without GPG vetting is reckless. Every new vendor should provide their public key through a validated, authenticated channel. Store fingerprints, verify identities, and integrate checks into your security and build pipelines. Make verification part of the contract, not an afterthought.
Audit trails matter. Track every signature, every validation, every update. If an incident occurs, you should be able to trace exactly when trust was established, when it changed, and why. This is the difference between quick recovery and weeks of uncertainty.
Same with offboarding. Revoking trust is just as important as granting it. Remove stale keys, disable expired entries in keyservers you control, and ensure dependent services no longer accept signatures from vendors you no longer trust.
The best vendor risk management for GPG is proactive, automated, and relentless. Human checks fail under load; automation does not get tired. If you want to see what this looks like in practice, you can use hoop.dev to wire it into your workflow and watch it go live in minutes.
Trust is code. Treat it that way.