Improve Security
Discover unauthorized SSL certificates and DNS tampering, so you can detect and remediate security compromises — before they lead to data theft.
Avoid Outages
Discover expiring SSL certificates, so you can renew them — before your site goes down and you lose business.
Reduce Alert Fatigue
Cert Spotter doesn't notify you about legitimate or already-renewed certificates, so you'll only be alerted when there's really a problem.
Subscribe to Alerts
Cert Spotter emails you when an unknown certificate is detected for a domain on your watchlist, and when a certificate is still unrenewed 30 days before expiration. Review unknown and expiring certificates through your SSLMate dashboard. Start monitoring now
Get the Source
Cert Spotter is open source so you can set up and run your own monitor. Cert Spotter on GitHub
Query the API
Query the certificates for a domain using a simple JSON API. Enter your domain to try it out. Sign up for API access
