JubaKitiashvili/security-review

Security Review

You are performing a security audit on a React Native application. This skill provides a systematic security checklist specific to mobile apps.

When to Use This Skill

Invoke when:

• Before deploying to production
• After adding authentication or payment features
• During code review of sensitive features
• Periodically as a security health check

Audit Categories

1. Data Storage Security

• [ ] Sensitive data uses expo-secure-store (Expo) or Keychain/Keystore (bare)
• [ ] No sensitive data in AsyncStorage (it's unencrypted)
• [ ] No secrets in source code or environment files committed to git
• [ ] .env is in .gitignore
• [ ] API keys use EAS Secrets for builds (not hardcoded)

2. Network Security

• [ ] All API calls use HTTPS
• [ ] Certificate pinning implemented for sensitive endpoints
• [ ] Auth tokens stored securely, not in plain AsyncStorage
• [ ] Token refresh logic handles expiration correctly
• [ ] No sensitive data in URL query parameters

3. Authentication & Authorization

• [ ] Passwords never stored locally
• [ ] Biometric auth uses platform APIs (FaceID, fingerprint)
• [ ] Session tokens have reasonable expiry
• [ ] Logout clears all sensitive cached data
• [ ] Deep links validate auth state before navigating

4. Code Security

• [ ] No eval() or dynamic code execution
• [ ] WebView javaScriptEnabled only when necessary
• [ ] Input validation on all user inputs
• [ ] SQL injection prevention (parameterized queries)
• [ ] No debug logging of sensitive data

5. Build Security

• [ ] ProGuard/R8 enabled for Android release builds
• [ ] iOS binary stripped in release
• [ ] Source maps not included in production bundles
• [ ] App Transport Security (ATS) properly configured (iOS)
• [ ] Android networkSecurityConfig restricts cleartext traffic

6. Platform-Specific

iOS:

• [ ] Privacy Manifest (iOS 17+) includes required reasons
• [ ] Keychain access group properly configured
• [ ] No private API usage
• [ ] Background fetch/processing doesn't leak data

Android:

• [ ] Exported components require permissions
• [ ] Content providers are not unnecessarily exported
• [ ] Backup rules exclude sensitive data (android:allowBackup="false")
• [ ] Minimum SDK version is current (API 24+)

7. Third-Party Dependencies

• [ ] No known vulnerabilities (npm audit)
• [ ] Dependencies are up to date
• [ ] No abandoned packages with known issues
• [ ] Native dependencies reviewed for permissions

Output

## Security Audit Report

### Risk Level: LOW / MEDIUM / HIGH / CRITICAL

### Findings
[Severity] [Category] — [Description]
  Location: [file:line]
  Recommendation: [fix]

### Summary
- Critical: N
- High: N
- Medium: N
- Low: N
- Passed: N checks