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What is Cross-Site scripting and how can you fix it?

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Cross-Site Scripting (XSS) is also referred to as a client-side code injection attack. In this, the attacker intends to execute malicious scripts on the victim’s web browser by including malicious code in a legitimate page or web application. The actual attack occurs when the victim visits the page and executes malicious code, and this web application actually becomes a vehicle to deliver the malicious script to the user’s browser. Forums, web pages, and message boards that allow comments support cross-site scripting attacks.

To fix these attacks, apply context-dependent output encoding. 

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