Software Supply Chain Backdoor & Malicious Package Triage
Runbook for compromised third-party npm, PyPI, or container dependencies. SBOM audit, artifact quarantine, build pipeline freeze, and secret revocation.
1Phase 1: Build Pipeline Freeze & Artifact Quarantine
Halt CI/CD Deployment Pipelines & Freeze Releases
Disable automated deployment triggers (GitHub Actions, GitLab CI, ArgoCD) immediately to prevent infected build artifacts from promoting to production clusters.
Query Package Lockfiles for Compromised Hash Versions
Check package-lock.json, yarn.lock, requirements.txt, or Poetry locks across all microservices for the flagged malicious dependency package.
2Phase 2: CI/CD Secrets Invalidation & Re-Attestation
Rotate All CI/CD Pipeline Environment Secrets
Supply chain malware typically exfiltrates environment variables (AWS_SECRET_ACCESS_KEY, GITHUB_TOKEN, NPM_TOKEN, STRIPE_SECRET). Consider all build secrets burned.
Rebuild Base Images from Clean Upstream Hashes
Purge local and cloud container registry caches. Rebuild images with verified cryptographic digest pins (@sha256:...) rather than mutable tags (:latest).
3Phase 3: Cryptographic Attestation, SLSA Provenance & Guardrails
Implement Container Image Signing & Admission Control
Require cryptographic container signing (Cosign/Sigstore) and policy enforcement (Kyverno, OPA Gatekeeper) before any container can start in Kubernetes.
Publish Coordinated Customer Security Advisory
Draft and distribute a transparent post-mortem security advisory outlining affected git commit ranges, sha256 checksums, and audit steps for downstream users.
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