A Valid Certificate Doesn’t Mean a Secure Connection
Your certificate can be perfectly valid, correctly issued, and months from expiry while the server behind it still happily negotiates TLS 1.0 or a cipher suite that’s been considered weak for years. Certificate monitoring won’t catch this. It’s a completely separate question: not “is the cert valid,” but “what is the server actually willing to negotiate.”
Seabhac.io probes exactly that, continuously, across every protocol version and cipher your server will accept.
How it works:
- Probe every protocol version: Attempt handshakes across TLS 1.0 through 1.3 to see what's actually accepted, not just advertised.
- Enumerate cipher suites: Identify every cipher your server is willing to negotiate, including weak or deprecated ones.
- Flag what shouldn't be there: Get alerted when a deprecated protocol or weak cipher is still accepted after a config change.
Compliance and Real-World Risk
- TLS 1.0 and 1.1 are deprecated by every major standards body and explicitly disallowed under PCI-DSS — but load balancer and proxy defaults don’t always reflect that.
- Weak or export-grade ciphers left enabled after a server migration are exactly what automated vulnerability scanners look for first.
- Configuration drift a load balancer replacement or a new CDN edge node can silently reintroduce settings you thought were locked down.
Pairs With Certificate Monitoring
This check answers a different question than our SSL Certificate Monitoring feature. Certificate monitoring confirms the cert itself is valid and not expiring; TLS cipher audit confirms the connection negotiated to reach it is actually secure. Run both for full coverage of your TLS posture.