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name: security-validation description: Comprehensive security validation for password generator applications. Use when auditing, implementing, or reviewing security measures for password handling and generation. license: MIT

Security Validation for Password Generators

When to Use

Use this skill for comprehensive security audits, implementing security measures, or reviewing code for security vulnerabilities in password generation applications.

Security Audit Process

1. Randomness Audit

Verify cryptographically secure random number generation:

• ✅ Use crypto.getRandomValues() (Web) or crypto.randomBytes() (Node.js)
• ❌ Never use Math.random() - it's predictable

2. Memory Security

• Clear passwords from memory after use
• Avoid storing in global/window scope
• Don't persist passwords to localStorage/sessionStorage

3. XSS Prevention

• Escape all user inputs before display
• Use textContent instead of innerHTML for password display
• Implement Content Security Policy

4. Dependency Audit

Copynpm audit
npm audit fix

Security Checklist

See the security checklist for a complete validation list.

Automated Validation

Copy# Check for insecure random usage
grep -rn "Math.random" src/

# Check for console.log with passwords
grep -rn "console.log.*password" src/

# Check for innerHTML usage
grep -rn "innerHTML" src/

# Run security audit
npm audit --audit-level=moderate

Reporting

Document any security findings with:

1. Severity (Critical/High/Medium/Low)
2. Location (file and line number)
3. Description of vulnerability
4. Recommended fix