An Expired Certificate Is a Self-Inflicted Outage
Certificates don’t fail gracefully. One day they’re valid, the next every browser hitting your site shows a full-page security warning and every API client hard-fails on the handshake usually discovered by a customer, not by you.
Seabhac.io checks certificate validity on every connection, on a schedule you control, so an expiry date on a calendar somewhere isn’t the only thing standing between you and an outage.
How it works:
- Connect and inspect: Every run performs a real TLS handshake against your endpoint and reads the presented certificate chain.
- Track the countdown: Days remaining until expiry are logged on every check, not just flagged once at the end.
- Alert with lead time: Get warned days or weeks ahead of expiry configurable to fit your renewal process, manual or automated.
Why “I’ll Remember” Doesn’t Scale
Certificate renewal reminders live in calendars that get ignored, cron jobs that silently stop running, and ACME clients that fail one week without anyone checking the logs.
- No dependency on your renewal automation working we check the certificate that’s actually being served, not whether a renewal script ran.
- Catches issuer and chain problems too an incomplete chain or wrong intermediate can break trust even with a technically valid cert.
- One dashboard across every domain you operate, instead of a spreadsheet of expiry dates.
What Gets Checked on Every Run
- Days remaining until expiry, tracked over time.
- Validity window not-before and not-after dates.
- Issuer and subject catch a cert issued by the wrong CA or for the wrong hostname.
- Cipher suite and protocol version negotiated during the handshake.