Free security tools that respect your privacy
Most “free” online security scanners come with a catch: they make you sign up, throttle you behind a paywall, or quietly log and publish every domain you look up. Ours don’t. Every tool here is built by a working penetration-testing team, runs the real check (not a cached guess), explains the result in plain English, and forgets your input the moment it answers. No account, no API key, no stored history.
What you can check today
The SSL certificate checker reads the live TLS certificate a domain is serving and can email you before it expires — the one feature most certificate checkers are missing. The HTTP security header analyzer grades your security headers, deep-lints your Content-Security-Policy, audits your cookies and hands you copy-paste fixes for every major web server. The subdomain finder maps your externally visible attack surface using passive Certificate Transparency and DNS data — no intrusive scanning. Each one is a fast, focused first sweep of a website’s security posture.
When you need more than a tool
Automated checks are excellent at catching the obvious, high-impact mistakes — but real attackers chain subtle flaws across authentication, business logic and access control that no scanner can find on its own. That is where a human-led penetration test comes in. If a free tool here surfaces something concerning, it is usually worth a deeper look — and we are happy to help. Get in touch for a professional assessment.