| name | security-auditor |
| description | Continuous security vulnerability scanning for OWASP Top 10, common vulnerabilities, and insecure patterns. Use when reviewing code, before deployments, or on file changes. Scans for SQL injection, XSS, secrets exposure, auth issues. Triggers on file changes, security mentions, deployment prep. |
| allowed-tools | Read, Grep, Bash |
Security Auditor Skill
Automatic security vulnerability detection.
When I Activate
- ✅ Code files modified (especially auth, API, database)
- ✅ User mentions security or vulnerabilities
- ✅ Before deployments or commits
- ✅ Dependency changes
- ✅ Configuration file changes
What I Scan For
OWASP Top 10 Patterns
1. SQL Injection
const query = `SELECT * FROM users WHERE id = ${userId}`;
const query = 'SELECT * FROM users WHERE id = ?';
db.query(query, [userId]);
2. XSS (Cross-Site Scripting)
element.innerHTML = userInput;
element.textContent = userInput;
element.innerHTML = DOMPurify.sanitize(userInput);
3. Authentication Issues
const token = jwt.sign(payload, 'secret123');
const token = jwt.sign(payload, process.env.JWT_SECRET);
4. Sensitive Data Exposure
password = "admin123"
password = os.getenv("DB_PASSWORD")
5. Broken Access Control
app.delete('/api/users/:id', (req, res) => {
User.delete(req.params.id);
});
app.delete('/api/users/:id', auth, checkOwnership, (req, res) => {
User.delete(req.params.id);
});
Additional Security Checks
- Insecure Deserialization
- Security Misconfiguration
- Insufficient Logging
- CSRF Protection Missing
- CORS Misconfiguration
Alert Format
🚨 CRITICAL: [Vulnerability type]
📍 Location: file.js:42
🔧 Fix: [Specific remediation]
📖 Reference: [OWASP/CWE link]
Severity Levels
- 🚨 CRITICAL: Must fix immediately (exploitable vulnerabilities)
- ⚠️ HIGH: Should fix soon (security weaknesses)
- 📋 MEDIUM: Consider fixing (potential issues)
- 💡 LOW: Best practice improvements
Real-World Examples
SQL Injection Detection
app.get('/users', (req, res) => {
const sql = `SELECT * FROM users WHERE name = '${req.query.name}'`;
db.query(sql, (err, results) => res.json(results));
});
🚨 CRITICAL: SQL injection vulnerability (line 2)
📍 File: routes/users.js, Line 2
🔧 Fix: Use parameterized queries
const sql = 'SELECT * FROM users WHERE name = ?';
db.query(sql, [req.query.name], ...);
📖 https:
Password Storage
def create_user(username, password):
user = User(username=username, password=password)
user.save()
🚨 CRITICAL: Storing plain text password (line 2)
📍 File: models.py, Line 2
🔧 Fix: Hash passwords before storing
from bcrypt import hashpw, gensalt
hashed = hashpw(password.encode(), gensalt())
user = User(username=username, password=hashed)
📖 Use bcrypt, scrypt, or argon2 for password hashing
API Key Exposure
const stripe = require('stripe')('sk_live_abc123...');
🚨 CRITICAL: Hardcoded API key detected (line 1)
📍 File: payment.js, Line 1
🔧 Fix: Use environment variables
const stripe = require('stripe')(process.env.STRIPE_SECRET_KEY);
📖 Never commit API keys to version control
Dependency Scanning
I can run security audits on dependencies:
npm audit
pip-audit
Relationship with @code-reviewer Sub-Agent
Me (Skill): Quick vulnerability pattern detection
@code-reviewer (Sub-Agent): Deep security audit with threat modeling
Workflow
- I detect vulnerability pattern
- I flag: "🚨 SQL injection detected"
- You want full analysis → Invoke @code-reviewer sub-agent
- Sub-agent provides comprehensive security audit
Common Vulnerability Patterns
Authentication
- Weak password policies
- Missing MFA
- Session fixation
- Insecure password storage
Authorization
- Missing access control
- Privilege escalation
- IDOR (Insecure Direct Object Reference)
Data Protection
- Unencrypted sensitive data
- Weak encryption algorithms
- Missing HTTPS
- Insecure cookies
Input Validation
- SQL injection
- Command injection
- XSS
- Path traversal
Sandboxing Compatibility
Works without sandboxing: ✅ Yes
Works with sandboxing: ✅ Yes
Optional: For dependency scanning
{
"network": {
"allowedDomains": [
"registry.npmjs.org",
"pypi.org",
"api.github.com"
]
}
}
Integration with Tools
With secret-scanner Skill
security-auditor: Checks code patterns
secret-scanner: Checks for exposed secrets
Together: Comprehensive security coverage
With /review Command
/review --scope staged --checks security
Customization
Add company-specific security patterns:
cp -r ~/.claude/skills/security/security-auditor \
~/.claude/skills/security/company-security-auditor
Learn More