Which HTTP header is used to mitigate Cross-Site Scripting (XSS) attacks?

  • Access-Control-Allow-Origin
  • Content-Security-Policy
  • X-Frame-Options
  • X-XSS-Protection
The X-XSS-Protection header is used to mitigate Cross-Site Scripting (XSS) attacks in web applications. XSS attacks involve injecting malicious scripts into web pages, which can then execute in users' browsers, leading to data theft, session hijacking, and other security compromises. The X-XSS-Protection header instructs browsers to activate their built-in XSS protection mechanisms, such as filtering or blocking potentially dangerous scripts, thereby reducing the risk of successful XSS attacks. Implementing this header is an important security measure to safeguard against XSS vulnerabilities and protect users' sensitive information.
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