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What is a Cross-Site Scripting (XSS)

 

Cross-Site Scripting allows attackers to inject malicious scripts (usually JavaScript) into your webpages. When visitors load these pages, the malicious code runs in their browser without their knowledge.

Why It’s Dangerous:

  • Can steal user session cookies
  • Allows attackers to impersonate logged-in users
  • Can redirect visitors to malicious websites

How to Protect Yourself:

  • Keep Joomla and all extensions up to date
  • Use security extensions with XSS filtering
  • Validate and sanitize user input
  • Enable Content-Security Policy (CSP) headers

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