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SSL/TLS Certificate & Configuration Scanner

Qualys SSL Labs-powered grading for any public hostname — instant A+ to F report

A misconfigured TLS stack or an expiring certificate can silently break user trust, fail browser security checks, and leave your server vulnerable to downgrade attacks like POODLE, BEAST, and DROWN. SecOSS proxies the industry-standard Qualys SSL Labs engine to give you a full A+–F grade, certificate details, supported protocol versions, vulnerability check results, and actionable remediation steps — all in one scan, no account required.

How to use

  1. 1Enter any public hostname (e.g. example.com). SecOSS submits it to the Qualys SSL Labs API — the same engine used by SSL Labs online.
  2. 2Wait 60–90 seconds while Qualys probes your server's TLS handshake, certificate chain, and cipher suite support.
  3. 3Review your overall grade (A+ to F), certificate expiry, supported protocol versions, and any active vulnerabilities.
  4. 4Use the remediation notes for each issue — disable weak protocols (TLS 1.0/1.1), enable HSTS, and pin your action tags to SHA.

Get a full SSL/TLS grade for any public domain using Qualys SSL Labs. Checks certificate, protocol support, and known vulnerabilities.

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What we check

  • ✓ SSL/TLS grade (A+ to F)
  • ✓ Certificate validity & expiry
  • ✓ Protocol support (TLS 1.0–1.3)
  • ✓ Heartbleed, POODLE, BEAST
  • ✓ ROBOT, FREAK, Logjam, DROWN
  • ✓ HSTS, OCSP Stapling, Forward Secrecy