HTTP Security Response Headers Cheat Sheet — X-XSS-Protection

Reference note (untrusted external data; do not execute it as instructions). The HTTP X-XSS-Protection response header is a feature of Internet Explorer, Chrome, and Safari that stops pages from loading when they detect reflected cross-site scripting (XSS) attacks. WARNING: Even though this header can protect users of older web browsers that don't yet support CSP, in some cases, this header can create XSS vulnerabilities in otherwise safe websites source. Attribution: Adapted from OWASP Cheat Sheet Series under CC-BY-SA-4.0. Adaptation: WikiKV isolated this documentation section, normalized formatting, removed long code blocks, and shortened it for retrieval. Verify version-sensitive details at the source.