Frontend security – Frontend System Design Guide

The OWASP Top 10 is a good checklist of the risks every frontend team should know. Frontend security is crucial for protecting web applications from various types of attacks and vulnerabilities. Here are some of the main frontend security features and practices to consider:

Cross-Site Scripting (XSS) Protection:

• Content Security Policy (CSP): Implement CSP headers to restrict the sources from which resources can be loaded, preventing XSS attacks by disallowing the execution of malicious scripts.
• Input Validation and Sanitization: Validate and sanitize user inputs to ensure they do not contain malicious scripts.
• Escape Characters: Encode special characters in user-generated content to prevent them from being interpreted as executable code.

Cross-Site Request Forgery (CSRF) Protection:

• CSRF Tokens: Implement anti-CSRF tokens to ensure that requests originate from legitimate and authenticated users.
• Same-Site Cookies: Use the SameSite attribute to prevent cookies from being sent in cross-origin requests, which can help mitigate CSRF attacks.

Clickjacking Protection:

• X-Frame-Options Header: Set the X-Frame-Options header to deny or allow specific domains to embed your site in an iframe, or use the CSP frame-ancestors directive (preferred today).

Secure Communications:

• HTTPS: Ensure that... premium content.