A broken SSL cert triggers safety warnings. Learn how to verify certificate expiration thresholds and cipher compatibility step-by-step.
Security is the foundation of user trust. A site displaying security warnings will turn away visitors and face penalties in search rankings. Understanding and monitoring your Secure Sockets Layer (SSL) certificates is critical to maintaining a healthy site.
1. What Happens During an SSL Handshake?
When a browser requests a secure connection, it initiates a handshake:
- The client sends supported cryptographic suites.
- The server responds with its public certificate.
- The client validates the certificate against trusted root authorities.
- A session key is generated to encrypt all traffic.
2. Certificate Chains and Root Trust
SSL certificates rely on a chain of trust. Your leaf certificate links to intermediate certificates, which connect back to a trusted root authority pre-installed in the browser. A break anywhere in this chain triggers warnings. Monitoring these intermediates ensures your trust chain remains complete and secure.
3. Proactive SSL Audits
Avoid unexpected certificate expirations. Running automated checks on your domains via our SSL Checker helps monitor TLS health and identify cipher suite weaknesses before users encounter connection warnings.