How We Survived Encryption: Lessons Learned For most of our early engineering years, encryption was an afterthought—a checkbox we ticked with a default TLS config and a haphazardly implemented AES-256 library. That changed two years ago when a key rotation failure locked us out of 12% of our production user data, triggered a 48-hour outage, and nearly cost us a major enterprise contract. What followed was a year-long overhaul of our encryption strategy, full of hard-won lessons that we’re sharing here to help other teams avoid the same pitfalls. The Breaking Point: When Encryption Became a Liability Our outage stemmed from a fragmented key management setup: we had 14 separate encryption keys stored across hardcoded config files, environment variables, and a legacy on-premises HSM that only two retired engineers knew how to access.…