FREE TOOLS
Free security tools, powered by our engine.
Point any tool at a domain and get real results in minutes — agentless, outside-in, no account. Every one runs the same engine behind SICenter's continuous monitoring.
Attack Surface Scan
Map everything you expose to the internet — assets, open ports, services and known CVEs — from one domain.
Open toolDMARC Checker
Check whether your domain can be spoofed. We inspect SPF, DKIM and DMARC and tell you exactly what's missing.
Open toolSSL / TLS Checker
Verify your certificate, expiry, hostname match and TLS configuration across your estate — not just one host.
Open toolSubdomain Finder
Discover the subdomains attached to your domain — including the forgotten ones that become entry points.
Open toolSecurity Headers Checker
See which protective HTTP headers your site is missing — HSTS, CSP, X-Frame-Options and more.
Open tool