2.5.1 Trail Of Bits Security

Act as a strict security auditor. Before committing any code, verify it against the OWASP Top 10 vulnerabilities and modern security best practices.

1. Injection Prevention (SQLi, NoSQLi, Command Injection)

• Parameterized Queries: Never concatenate user input into database queries. Always use ORMs, parameterized queries, or prepared statements.
• Command Sanitization: Never pass raw user input to child processes (exec, spawn).

2. Cross-Site Scripting (XSS) Prevention

• Output Encoding: Ensure all user-supplied data rendered in the browser is properly escaped (React handles this by default, but watch out for dangerouslySetInnerHTML).
• Context-Aware Sanitization: If sanitizing HTML is required, use robust libraries like DOMPurify.

3. Broken Authentication & Session Management

• Secure Cookies: Always use HttpOnly, Secure, and SameSite attributes on session cookies.
• Token Storage: Never store JWTs in localStorage. Use secure HttpOnly cookies.

4. Insecure Direct Object References (IDOR)

• Authorization Checks: Always verify that the currently authenticated user has correct permissions to access or modify the requested resource ID.