Website Security Checker & Threat Surface Auditor

The Website Security Checker performs a multi-dimensional surface scan of any public website to evaluate its foundational security defensibility. It inspects transport layer encryption, SSL/TLS certificate validity, modern HTTP security headers, and domain-level anti-spoofing policies.

It instantly flags critical web security weaknesses including expired or expiring SSL certificates, missing HSTS headers allowing SSL-stripping, clickjacking vulnerabilities, missing CSP directives allowing cross-site scripting (XSS), and exposed server version banners that assist attackers in reconnaissance.

A pervasive myth in web security is that having an active SSL/TLS padlock icon means a website is "secure." In reality, SSL/TLS provides only one specific protection: encrypting data in transit between the user's browser and the web server. It provides zero protection against application-layer attacks: an attacker can effortlessly execute Cross-Site Scripting (XSS), steal session cookies, or execute SQL injection over a perfectly encrypted HTTPS connection.

True web perimeter security requires a multi-layered defense-in-depth architecture. Transport encryption (TLS 1.3) must be reinforced with HTTP Strict Transport Security (HSTS) to prevent downgrade attacks; Content Security Policy (CSP) must restrict script execution; framing protections must eliminate clickjacking; and cookie security flags (`Secure`, `HttpOnly`, `SameSite`) must prevent session hijacking even if an application script is compromised.