Missing Security Headers
mediumWhat is Missing Headers?
Web applications that don't set security-related HTTP response headers leave browsers without instructions on how to protect against common attacks.
How it works
Without headers like Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options, browsers use default permissive behaviour that allows attacks like XSS, clickjacking, and MIME-type confusion.
Impact
Increased attack surface for XSS, clickjacking, protocol downgrade attacks, and MIME confusion. Each missing header represents a specific class of attacks that browsers could otherwise prevent.
ShieldReport checks for all critical security headers: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy.
How to fix it
Add all recommended security headers to your web server or application. ShieldReport can generate a tailored Content-Security-Policy based on your site's actual resource usage.
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