Introduction to IaC Security
Infrastructure as Code (IaC) enables version-controlled, repeatable infrastructure deployments. Security scanning of IaC templates catches misconfigurations before they reach production.
Why IaC Security Matters
Benefits of Shift-Left:
Catch issues before deployment
Reduce remediation costs
Faster feedback to developers
Consistent security standards
Common IaC Misconfigurations
Statistics:
65% of IaC templates contain misconfigurations
Average 14 security issues per template
80% are easily preventable
IaC Security Risks
Storage Misconfigurations
Public S3 buckets
Unencrypted storage
Missing access logging
Network Misconfigurations
Overly permissive security groups
Missing network segmentation
Public exposure of internal services
Encryption Gaps
Missing encryption at rest
Unencrypted data in transit
Weak encryption algorithms
IaC Scanning Tools
Terraform Scanners
Checkov: Comprehensive multi-framework scanner
tfsec: Terraform-focused security scanner
Terrascan: Policy as code with OPA
CloudFormation Scanners
cfn-lint: AWS-maintained linter
cfn_nag: Security-focused scanner
Kubernetes Scanners
Kubesec: Security risk scoring
Kube-linter: Best practices linting
CI/CD Integration
Pipeline Integration
Scan on every pull request
Block merges on critical failures
Provide fix guidance
Track exceptions
Pre-Commit Hooks
Local scanning before commit
Immediate developer feedback
Reduce CI failures
Policy as Code
Custom Policies
Organization-specific rules
Compliance requirements
Industry standards
Exception Management
Document justifications
Approval workflows
Time-limited exceptions
Implementation Roadmap
Phase 1: Assess
Inventory IaC templates
Initial baseline scan
Prioritize findings
Phase 2: Integrate
CI/CD integration
Developer training
Documentation
Phase 3: Enforce
Block on failures
Metrics tracking
Continuous improvement
Conclusion
IaC security scanning is essential for modern infrastructure. Shift security left to prevent misconfigurations before production.