Devsecops

What I do

• Integrate security into CI/CD pipelines
• Implement security scanning at each pipeline stage
• Automate vulnerability detection and remediation
• Enforce security policies as code
• Conduct security code reviews
• Build security awareness programs

When to use me

• When implementing shift-left security
• When automating security compliance
• When building secure software supply chains
• When conducting security testing in CI/CD
• When responding to vulnerabilities automatically
• When training developers on secure coding

Key Concepts

Security Scanning Pipeline

stages:
  - secret-scan
  - dependency-scan
  - static-analysis
  - build-scan
  - image-scan
  - deploy-scan

secret-scan:
  stage: secret-scan
  script:
    - gitlab-sast
  allow_failure: false

dependency-scan:
  stage: dependency-scan
  script:
    - npm audit --audit-level=high
    - snyk test
    - trivy fs --security-checks vuln
  allow_failure: false

static-analysis:
  stage: static-analysis
  script:
    - semgrep --config=auto --json .
    - sonarqube-scanner
  allow_failure: true

image-scan:
  stage: image-scan
  script:
    - trivy image --severity HIGH,CRITICAL myapp:$CI_COMMIT_SHA
    - dockle myapp:$CI_COMMIT_SHA
  allow_failure: false

Security Policies

# OPA Gatekeeper policy
package kubernetes.admission

deny[msg] {
  input.request.kind.kind == "Deployment"
  not input.request.object.spec.template.spec.containers[_].securityContext.runAsNonRoot
  msg = "Containers must run as non-root"
}

deny[msg] {
  input.request.kind.kind == "Pod"
  input.request.object.spec.containers[_].securityContext.privileged
  msg = "Containers must not be privileged"
}

SBOM Generation

# CycloneDX in CI/CD
syft app:latest -o cyclonedx-json > sbom.json

# Trivy SBOM
trivy sbom app:latest --format cyclonedx

# SPDX
syft app:latest -o spdx-json

Secrets Management

# HashiCorp Vault integration
apiVersion: v1
kind: Secret
metadata:
  name: vault-secrets
type: Opaque
stringData:
  secret.properties: |
    DB_PASSWORD=$(vault kv get -field=password secret/database)
    API_KEY=$(vault kv get -field=api_key secret/api)

SAST Tools

DAST Integration

dast:
  stage: dynamic-analysis
  script:
    - zap-baseline.py -t $STAGING_URL -r zap_report.html
    - nuclei -u $STAGING_URL
  allow_failure: true

Supply Chain Security

• Sign all container images (Cosign, Notary)
• Use SLSA-compliant build systems
• Implement SBOM generation and scanning
• Pin dependency versions
• Use proxy registries for caching
• Enable image signature verification