PCI DSS & Payment Security
Detailed technical implementations showcasing our expertise across various cloud platforms and industries.
Project Overview
A leading payment processor handling millions of transactions monthly faced critical compliance and security challenges. Their AWS infrastructure required comprehensive security hardening to meet PCI DSS Level 1 compliance standards while maintaining operational efficiency. The existing infrastructure had outdated operating systems, overly permissive IAM policies, and insufficient monitoring capabilities, creating both compliance gaps and security vulnerabilities that put sensitive cardholder data at risk.
Client's Main Requests
PCI DSS Compliance
Implement comprehensive security controls to achieve and maintain PCI DSS Level 1 compliance across all AWS infrastructure components.
Infrastructure Security Modernization
Update outdated operating systems, harden IAM policies with principle of least privilege, and secure serverless functions with proper VPC isolation.
Automated Compliance Monitoring
Establish continuous compliance monitoring and automated security assessments with centralized logging and alerting.
Key Metrics
- 100% PCI DSS compliance achieved across all infrastructure components.
- 87% reduction in IAM policy overpermissions through role-based access hardening
- 0 security incidents post-implementation
- 60% faster security audit preparation time through automated compliance reporting
- 99.99% infrastructure uptime maintained during security transformation
Project Goals
- 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗔𝗪𝗦 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗛𝘂𝗯 for centralized compliance monitoring and automated PCI DSS assessment
- 𝗠𝗼𝗱𝗲𝗿𝗻𝗶𝘇𝗲 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 with latest secure OS versions across all EC2 instances
- 𝗥𝗲𝗱𝗲𝘀𝗶𝗴𝗻 𝗜𝗔𝗠 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 with cross-account access controls following least privilege principles
- 𝗦𝗲𝗰𝘂𝗿𝗲 𝗟𝗮𝗺𝗯𝗱𝗮 𝗳𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀 with proper IAM roles, VPC configurations, and timeout controls
- 𝗘𝘀𝘁𝗮𝗯𝗹𝗶𝘀𝗵 𝗰𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝘃𝗲 𝗼𝗯𝘀𝗲𝗿𝘃𝗮𝗯𝗶𝗹𝗶𝘁𝘆 with CloudWatch metrics and centralized logging
- 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁 𝗖𝗜/𝗖𝗗 𝘀𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝘀𝗰𝗮𝗻𝗻𝗶𝗻𝗴 with GitLab CI pipelines
Key Challenges & Results
Challenge
Meeting stringent PCI DSS requirements while maintaining high-availability payment processing operations required zero-downtime security transformations across production infrastructure.
Solution
Cloudwork implemented a phased security hardening approach utilizing AWS Security Hub as the compliance orchestration platform. The team executed rolling OS updates across EC2 fleets, redesigned IAM policies with granular role-based access controls supporting secure cross-account operations, and isolated Lambda functions within VPCs with strict egress controls. Application Load Balancers were configured with SSL/TLS termination and web application firewall rules, while GitLab CI pipelines automated security scanning and compliance validation on every deployment.
Results
The payment processor achieved full PCI DSS Level 1 compliance certification within 90 days, with AWS Security Hub providing continuous compliance monitoring and automated remediation workflows. The hardened IAM architecture eliminated 87% of overpermissioned access patterns while enabling secure cross-account operations for development teams. CloudWatch integration provided real-time security event monitoring with automated incident response, resulting in zero security incidents and 60% faster audit preparation cycles.
Technologies & Tools Used
- AWS Services Security Hub, IAM, Lambda, VPC, ELB (Application Load Balancer), CloudWatch, EC2
- CI/CD GitLab CI
- Compliance PCI DSS Level 1 framework
- Security IAM policy hardening, VPC isolation, SSL/TLS encryption, security scanning