Cross-Site Scripting (XSS)

Definition

Cross-Site Scripting is a security vulnerability where attackers inject malicious scripts into web pages viewed by other users. These scripts can steal session tokens, cookies, and other sensitive data, or perform actions on behalf of the user. XSS comes in several forms: reflected (via URL parameters), stored (in databases), and DOM-based (in client-side JavaScript). Prevention requires proper input validation, output encoding, and Content Security Policy implementation.

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Digital Skimmers See definition DOM Sanitization See definition DOM-based XSS See definition

Definition

What is Cross-Site Scripting (XSS)?

Cross-Site Scripting is a security vulnerability where attackers inject malicious scripts into web pages viewed by other users. These scripts can steal session tokens, cookies, and other sensitive data, or perform actions on behalf of the user. XSS comes in several forms: reflected (via URL parameters), stored (in databases), and DOM-based (in client-side JavaScript). Prevention requires proper input validation, output encoding, and Content Security Policy implementation.

Definition

How does Cross-Site Scripting (XSS) relate to client-side security?

Cross-Site Scripting (XSS) is an important concept in client-side security that helps protect websites and web applications from various threats and vulnerabilities. Cross-Site Scripting is a security vulnerability where attackers inject malicious scripts into web pages viewed by other users. These scripts can steal session tokens, cookies, and other sensitive data, or perform actions on behalf of the user. XSS comes in several forms: reflected (via URL parameters), stored (in databases), and DOM-based (in client-side JavaScript). Prevention requires proper input validation, output encoding, and Content Security Policy implementation.

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