Online security utilities
Free security tools.
Use practical security tools to inspect technology vulnerabilities, public disclosure contacts, domain registration signals, and infrastructure metadata in minutes.
7 tools
Technology Vulnerability Lookup
Check an exact technology version for known security vulnerabilities, severity, advisory identifiers, and available fixed releases.
Firewall Checker
Detect whether a website is protected by a web application firewall (WAF) and identify the firewall vendor when possible.
HTTP Security Checker
Check recommended HTTP security headers such as HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Cross-Origin policies.
Security.txt Checker
Check whether a public URL publishes security.txt and review disclosure contact, policy, encryption, and canonical metadata.
SSL Scanner
Analyze certificate status, issuer details, validity dates, and raw SSL intelligence from a target URL.
Whois Lookup
Inspect domain registration details, DNSSEC status, registrar metadata, and the full raw Whois payload.
Credential Leak Checker
Check if an email address has been exposed in known data breaches and review compromised sources.