TLS
TLS vulnerability check
Not whether a certificate exists, but how the server serves it: protocol versions, ciphers, known holes.
Why the check runs through our server
Seeing which ciphers and TLS versions a server accepts means connecting to it directly — a visitor's browser can't do that. So our probe connects, not your tab.
Common questions
Can I check any domain?
Yes, like any public TLS scanner — the domain doesn't have to be yours. The real limit is different: we only connect to the host you entered, not to an arbitrary server via a trick in the input.
Why is there no A, B, C grade?
A letter hides the substance: two servers with the same grade can have entirely different problems. We show what is enabled and what we checked — and we do not boil it down to a score.