Frontend Security Checklist

I need to audit and improve my frontend application's security.

**Application Details:**
- Framework: [React/Vue/Angular/etc.]
- Authentication: [method used]
- Sensitive data handled: [describe]

**Current Code Samples:**
```jsx
[paste relevant code handling user input, auth, etc.]
```

**Third-Party Integrations:**
[List external services and scripts]

**Known Concerns:**
[Any specific security concerns]

**Compliance Requirements:**
[GDPR/HIPAA/PCI-DSS/none]

Please provide:
1. XSS vulnerability audit
2. CSRF protection review
3. Secure data handling patterns
4. Content Security Policy setup
5. Dependency security audit approach
6. Secure authentication patterns
7. Security headers configuration