Explanation

Answer Example

Securing a frontend application involves addressing several key areas. First, to prevent cross-site scripting (XSS), I would sanitize user inputs and escape outputs using libraries like DOMPurify. For cross-site request forgery (CSRF), I would implement anti-CSRF tokens and ensure all cookies are set with the HttpOnly and Secure flags. To protect against man-in-the-middle (MITM) attacks, I'd enforce HTTPS using SSL/TLS certificates. I'd also use Content Security Policy (CSP) headers to restrict the sources from which scripts and other resources can be loaded. Implementing secure authentication flows, such as OAuth 2.0, and avoiding hardcoding sensitive data are critical. Additionally, I would conduct regular security audits and testing, staying updated on emerging threats and best practices.