Certificate Monitoring

Let's Encrypt is shutting down OCSP and other CAs are following. Here is why certificate revocation is changing and what it means for the certs you run.

Quantum-resistant algorithms are landing in TLS now, not in some distant future. Here is what is changing for certificates and what to do before it reaches you.

An expired SSL certificate fails closed: browsers block the page, API clients refuse to connect. Here is what breaks, how to fix it fast, and how to never repeat it.

Renewing an SSL certificate is more than clicking renew. Here is the full process, automated and manual, how to deploy it everywhere, and how to verify it took.

As certificate lifetimes shrink, manual renewal stops scaling. Here is how ACME automates issuance and renewal, and where automation still quietly breaks.

SSL certificate monitoring tracks expiry, chains, and issuance across every endpoint you run. Set it up so a certificate never takes down production.

All publicly trusted certificates must be logged to CT logs before browsers trust them. That means any certificate issued for your domain is publicly visible. Here's how to monitor for unauthorized issuance.

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 predictable, avoidable outages. Here is how SSL certificate expiration monitoring works and how to set alerts that fire in time.