Phase 6: Supply Chain Security & Slopsquatting · 50 min · pip-compile · npm ci · hashlib
Lockfile Enforcement & Hash Verification
Pin versions. Verify hashes. Block substitution. Enforce in CI.
Real-world application: Engineers who can enforce lockfile pinning and hash verification in CI demonstrate production-grade supply chain security skills and prevent package substitution attacks.
What you will learn
- Enforce lockfile pinning to prevent version drift in AI-generated code
- Implement hash verification to detect package substitution attacks
- Prevent package substitution by regenerating dependency trees from approved lockfiles
- Apply the agent-cicd pattern for dependency gates in CI
Introduction
Lockfile Enforcement & Hash Verification
Objective
Run the lockfile enforcement simulation with 8 packages. Observe the package substitution attack simulation, hash verification catching mismatches, and the 5-gate agent-CICD pattern. Identify which packages were substituted and blocked by hash verification.
Pin versions. Verify hashes. Block substitution. Enforce in CI.
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You've read the first 2 sections. The rest of this lesson covers The Problem, The Concept, Build, Check Yourself, Key Terms & Next — plus a hands-on lab, quiz, and project artifact.
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