Certificate Monitoring

The CA/Browser Forum has mandated a phased reduction in TLS certificate validity, reaching a 47-day maximum by 2029. Here's the timeline and impact.

Let's Encrypt and ACME automation make certificate management nearly frictionless. But automation can fail silently, and you won't know until you're down.

A working checklist for renewing TLS certificates without causing an outage. Covers planning, validation, and post-deployment verification.

Most certificate outages stem from certificates the ops team didn't know existed. Build a complete inventory using DNS, CT logs, and internal discovery.

A certificate just expired in production. Here's the triage order, the fastest ways to restore service, and what to document before the incident closes.

Expired certificates cause some of the most predictable and avoidable outages in modern infrastructure. Here's how to set up monitoring correctly.