14. Automated Secret Scanning (Gitleaks, Trufflehog) & Git Pre-Commit Hooks • Git, System Design & Web Security (OWASP Top 10) • Rishabh Ki Kaksha

Git, System Design & Web Security (OWASP Top 10) › 14. Automated Secret Scanning (Gitleaks, Trufflehog) & Git Pre-Commit Hooks

40 mins

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Course Syllabus

Module 1: Git Internals, Plumbing Commands & DAG Graph Architecture

01. Git Internals: Blobs, Trees, Commits & Annotated Tags (The .git Directory Anatomy) 02. Git DAG (Directed Acyclic Graph) & Plumbing Commands (cat-file, hash-object, write-tree) 03. Git Three Trees Architecture: Working Directory, Staging Index & HEAD

Part 1: Git Mastery, Security Defense & Caching

Module 2: Advanced Branching Strategies & Disaster Recovery

04. Advanced Rebasing: Interactive Rebase (squash, edit, fixup) vs Merge 05. Git Disaster Recovery: git reflog, Cherry-Pick & Recovering Deleted Commits/Branches 06. Enterprise Branching: Trunk-Based Development vs GitFlow vs Feature Flag Architecture

Module 3: Web Application Security: OWASP Top 10 Defenses

07. OWASP #1 & #3: SQL Injection (SQLi) & Server-Side Request Forgery (SSRF) Hardening 08. Cross-Site Scripting (XSS): Stored, Reflected, DOM-based & Content Security Policy (CSP) 09. CSRF vs Cross-Origin Traps: SameSite Cookies, Anti-CSRF Tokens & CORS Preflight Rules 10. Broken Object-Level Authorization (BOLA/IDOR) & Role-Based Access Control (RBAC/ABAC)

Module 4: Cryptography, PKI, SSL/TLS & Mutual Auth (mTLS)

11. Asymmetric Cryptography (RSA vs ECC) & Digital Signatures with GPG Keys 12. Public Key Infrastructure (PKI), TLS 1.3 Handshake & Let's Encrypt Automation 13. Mutual TLS (mTLS) for Zero-Trust Service-to-Service Communication

Module 5: DevSecOps, Secret Scanning & Zero-Trust Security Architecture

14. Automated Secret Scanning (Gitleaks, Trufflehog) & Git Pre-Commit Hooks 15. Software Supply Chain Security: Dependabot, SBOM (Software Bill of Materials) & Signed Commits 16. Enterprise Zero-Trust Architecture: Cloud IAM, Bastion Hosts & WireGuard VPN Networks

Interactive Lesson Studio

# 14. Automated Secret Scanning (Gitleaks, Trufflehog) & Git Pre-Commit Hooks

> Git & Web Security Notes by Rishabh - Topic 14

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### 1. Shift-Left Security: Blocking Leaks at `git commit` 🛑

Agar AWS Access Key ya Database URL Git me commit hokar GitHub push ho jaye — **30 seconds ke andar automated hacker bots use scrape karke AWS account compromise kar lete hain!**

---

### 2. Pre-Commit Hook Setup with Husky & Gitleaks

```bash
# 1. Install Husky:
npm install husky --save-dev && npx husky init

# 2. Add Pre-commit hook (.husky/pre-commit):
echo "gitleaks protect --staged --verbose" > .husky/pre-commit
```
*Ab agar developer galti se `.env` ya private key stage karega, toh commit instantly abort ho jayega!*

---

### 3. CI/CD Pipeline Scanning with TruffleHog

```yaml
# .github/workflows/security.yml
name: Secret Scanning
on: [push, pull_request]
jobs:
  trufflehog:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with: { fetch-depth: 0 }
      - uses: trufflesecurity/trufflehog@main
        with:
          extra_args: --only-verified # Only alerts if leaked key is live & valid!
```

---

### 4. Master Comparison Matrix

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### 5. Interview Ke 3 Sawal Is Topic Se

1. **Agar sensitive secret commit hokar push ho chuka ho, toh sirf naya commit karke secret delete karna safe kyu nahi hai?** -> Kyunki Git immutable DAG hai; purane commit ke Blob me secret hamesha zinda rahega (Git history rewrite via `git-filter-repo` ya BFG Repo-Cleaner mandatory hai).
2. **Shannon Entropy detection secret scanners me kaise help karti hai?** -> Random high-entropy strings (jaise base64 encoded API tokens) ko plain English text se distinguish karti hai.
3. **Leaked secret ko remediate karne ka Step 1 kya hona chahiye?** -> Code fix karne se pehle **AWS / Provider console me jakar leaked key ko instantly REVOKE / DEACTIVATE karna!**

---
**Next Topic:** 15. Software Supply Chain Security: Dependabot, SBOM (Software Bill of Materials) & Signed Commits

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