Cloud Security
AWS Security Transformation
From 45% to 92% compliance in 8 months
Overview
Engaged to lead an enterprise security transformation for a large-scale AWS environment, the project required addressing 111+ critical findings across 23 services while maintaining zero downtime and 99.9% service availability throughout.
The Problem
The organization had a 45% compliance score against CIS AWS Foundations Benchmark with over 111 open security findings spanning IAM misconfigurations, unencrypted data at rest, overly permissive security groups, missing logging, and lack of continuous monitoring. Manual remediation attempts were slow, inconsistent, and produced regressions.
The Solution
I architected a phased remediation program with Python/Boto3 automation scripts for systematic hardening, KMS encryption rollout across 89 SNS topics, RDS, EFS, and CloudTrail, IAM restructuring with least-privilege policies and MFA enforcement, Security Group and NACL reviews, and a centralized Security Hub dashboard for ongoing tracking. Each change was validated with Burp Suite and rolled out in maintenance windows to avoid disruption.
The Results
Compliance score improved from 45% to 92% in 8 months. Remediation velocity increased by 70% due to automation. Zero security incidents occurred during the process. The organization now has continuous compliance monitoring with automated drift detection and an incident response playbook in place.
Key Takeaways
- →Automation is the only way to remediate at scale without regressions — manual tickets don't hold up across 23 services
- →Phased rollouts with rollback plans are non-negotiable in production environments with strict uptime requirements
- →Security Hub as a single pane of glass dramatically accelerates stakeholder communication and prioritization
- →KMS encryption and IAM hardening yield the highest compliance impact for the effort invested
Tools & Technologies
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