The breach came fast. Not from weak encryption, but from a password that had sat unchanged too long. GPG keys are only as strong as the secrets that guard them, and without a disciplined rotation policy, every encrypted message becomes a liability.
GPG Password Rotation Policies are not optional. They are the backbone of secure key management. Rotation reduces the attack surface, limits the window of compromise, and ensures that stale credentials don’t become silent backdoors. Static passwords invite risk.
A strong policy starts with clear intervals. For most teams, rotating GPG passwords every 90 days balances security with workflow stability. Mission-critical systems may require monthly rotation. Always enforce minimum complexity — length, random characters, and no reuse — but remember that timing is the core of rotation.
Automation is the difference between theory and practice. Manual changes fail under time pressure, so build GPG password rotation into CI/CD pipelines or secure operational scripts. Use environment variables only for short-lived secrets. Rotate both the passphrase protecting the private key and any signing subkeys together to avoid mismatches.