Cross-Site Scripting: An attack method that involves injection of code or markup into a webpage. There are three major types of XSS: Reflected XSS, Stored XSS (aka persistent XSS) and DOM-based XSS (aka client side XSS).

XSS (Cross-Site Scripting) is an attack on Web applications that allows an attacker to inject HTML, script, CSS, etc into the webpage displayed to another user. Included in the OWASP Top 10 since 2004.

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