How can I prevent cross-site scripting attacks on my web app?
Asked on Oct 15, 2025
Answer
To prevent cross-site scripting (XSS) attacks, you should sanitize user inputs, use secure headers, and implement proper content security policies.
Example Concept: Cross-site scripting (XSS) is a vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users. To mitigate XSS, use security headers like Content-Security-Policy to restrict the sources of executable scripts, and always sanitize and validate user inputs to remove any potentially harmful code.
Additional Comment:
- Always escape user inputs when rendering them in HTML, JavaScript, or other contexts.
- Use libraries and frameworks that automatically handle XSS protection, such as React or Angular.
- Regularly update and audit your dependencies to patch known vulnerabilities.
✅ Answered with Security best practices.
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