Hardening CI Pipelines Against Secret Exposure

Hardening CI Pipelines Against Secret Exposure

CI logs and artifact uploads are common leakage points. A hardened pipeline minimizes secret footprint and detects accidental exposure quickly.

Step 1: Replace static secrets with short-lived tokens

permissions:
  id-token: write
  contents: read

Step 2: Mask and block sensitive patterns in logs

echo "::add-mask::$API_TOKEN"
./run_tests.sh 2>&1 | ./redact_secrets.py

Step 3: Scan artifacts before publish

trufflehog filesystem ./build-artifacts --fail

Pitfall

Storing long-lived deployment keys as generic repository secrets with broad access.