Tag Archives: security hub

Implementing Security-as-Code for AWS Multi-Account

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Target Audience: Cloud Engineers, Security Architects, DevOps Leads
Technical Depth: Intermediate/Advanced

Structure & Key Content:

  • Introduction: Traditional cloud security relies on manual reviews and periodic audits. In multi-account AWS environments, drift and misconfigurations scale exponentially. Introduce Security-as-Code (SaC) as the operational shift.
  • Core Components:
    • AWS Config Rules + AWS Security Hub as the centralized compliance engine.
    • Amazon GuardDuty for continuous threat detection and automated remediation triggers.
    • Terraform modules enforcing least-privilege IAM, encrypted S3/RDS/CloudTrail, and VPC flow logs.
  • Implementation Workflow:
    1. Define baseline policies (CIS AWS Foundations v3.0, NIST CSF 2.0).
    2. Deploy Config Rules via Terraform; map findings to Security Hub standards.
    3. Use AWS EventBridge + Lambda to auto-remediate non-compliant resources (e.g., disable public S3 buckets, enforce KMS encryption).
    4. Integrate Slack/Email alerts via SNS for Tier-1 findings.
  • Outcomes: Drastic reduction in audit preparation time, near-zero compliance drift, and enforceable guardrails across dev/staging/prod.

Code is published on github repo : https://github.com/rohan-bhagat/security-guardrails