What Web Security Headers Protect Against
HTTP response headers help define browser security behavior. Missing or misconfigured headers can increase exposure to clickjacking, cross-site scripting, and other browser-based attacks, even when HTTPS is properly configured.
Content Security Policy
Content-Security-Policy (CSP) lets site owners control which sources browsers may load scripts, styles, images, and other resources from. A well-designed policy can help reduce the impact of cross-site scripting.
Clickjacking Protection
X-Frame-Options and CSP's frame-ancestors directive help control whether other websites can embed a page in a frame.
Cookie Security
The Secure, HttpOnly, and SameSite cookie attributes help protect cookie transmission, limit JavaScript access, and reduce cross-site request risks.
Additional Security Considerations
Security headers are one layer of a broader web security strategy. They should complement secure application design, input validation, access controls, and properly configured TLS.
A scanner's results reflect the responses and content it can observe during the inspection. They do not constitute a complete security assessment or guarantee that a website is free from vulnerabilities.