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Cross-Site Scripting Defense

6 questions · ~5 min · intermediate

XSS defence is about keeping attacker-controlled values in the right parser context. These questions focus on sink choice, URL policy, rich-text sanitisation, CSP, Trusted Types, and the client-side paths where DOM-based bugs hide.

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A forum comment field only needs plain text. Which change removes the XSS risk at the earliest point?

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