Originally published on Sitecheckly . A robust security headers list includes Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, and Permissions-Policy. These HTTP response headers protect against cross-site scripting (XSS), clickjackin...

Source: [Dev.to](https://dev.to/hieu_le_f3630aa13143b35d8/security-headers-list-6-headers-every-site-needs-in-2026-1213)

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