Common Defenses Against Cross-Site Scripting (XSS)
Cross-site scripting (XSS) is a severe security vulnerability that allows attackers to inject malicious JavaScript code into web applications. To combat this threat, a range of defense mechanisms have been developed.
Input and Output Sanitization
The primary strategy for XSS prevention involves sanitizing user input and output. Sanitization refers to the process of removing or converting any malicious characters in data to prevent their exploitation.
Specific Techniques
Specific techniques employed for input and output sanitization include:
Preventing DOM-Based XSS
DOM-based XSS occurs when user-generated input is included in JavaScript-generated HTML code. To prevent this, follow these measures:
Other Measures
In addition to sanitization, other defenses include:
By implementing these defenses, web developers can significantly reduce the likelihood of XSS attacks, safeguarding web applications from malicious injections.
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