Sign in

Monitor 1 domain free · Trust Diff in your dashboard · vendor change alerts · free GitHub Action quota · HNDL scoring · public SPKI key map.

or
Why is this quantum-safe?
All three options use HMAC-SHA256 session tokens (256-bit keys, quantum-safe by primitive — Grover's algorithm doesn't break HMAC). OAuth-issued tokens come from Google / GitHub directly; they migrate to post-quantum schemes before us. No passwords stored on our side. Full policy →
By signing in you agree to our terms and privacy policy.
Already running pqcheck or the GitHub Action? Both work without signing in. A free account adds 1 monitored domain, watchlist, scan history, and unlocks paid tiers when you want more.