claude-code/.claude/rules/common/security.md

Security Guidelines

Mandatory Security Checks

Before ANY commit:

• No hardcoded secrets (API keys, passwords, tokens)
• All user inputs validated
• SQL injection prevention (parameterized queries)
• XSS prevention (sanitized HTML)
• CSRF protection enabled
• Authentication/authorization verified
• Rate limiting on all endpoints
• Error messages don't leak sensitive data

Secret Management

• NEVER hardcode secrets in source code
• ALWAYS use environment variables or a secret manager
• Validate that required secrets are present at startup
• Rotate any secrets that may have been exposed

Security Response Protocol

If security issue found:

1. STOP immediately
2. Use security-reviewer agent
3. Fix CRITICAL issues before continuing
4. Rotate any exposed secrets
5. Review entire codebase for similar issues