Sheet ⁨01⁩ · ⁨Sheet⁩Surveyed ⁨2026⁩

Incidents

Blameless postmortems from production: the timeline, what actually caused it, and the follow-ups that shipped afterwards.

The Admission Gate Denied an Image Built from a Fork

  • Sev3
  • None in production, blocked at admission
  • Security
  • CI/CD
  • 20 Sept 2026

An image built from a fork by a misconfigured pipeline in a sandbox account reached a production cluster and was denied at admission. Under the old setup it would have run, and nobody would have known.

A Regional Control-Plane Failure Took a Payments API Offline

A money-movement API ran in one AWS region for years. A regional control-plane incident took it offline for hours with nowhere to fail over to. The fix was idempotency first, then a second region.