Two focused security checks that need no setup: look up an email address against known breach data, and test whether a site's headers leave it open to clickjacking.
These two checks answer different questions and neither replaces a real security review. The Email Breach Checker tells you whether an address appears in known public breach data — useful before reusing a password or when onboarding someone. The Clickjacking Checker inspects whether a site allows itself to be framed, which is a header configuration question rather than a code one. Both take seconds and neither touches the target beyond an ordinary request.