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Case Study

Securing eCommerce with AWS WAF: Achieving PCI Compliance & Blocking Advanced Threats

Challenges

  • Compliance Framework & Threats Addressed: This WAF deployment was aligned with PCI DSS requirements for protecting cardholder data. Primary threats addressed include SQL injection, cross-site scripting (XSS), HTTP flood (Layer 7 DDoS), credential stuffing, and malicious bot traffic targeting checkout and account pages.

Solution Provided by Factual Minds

Protected Workloads & Scope

AWS WAF was deployed in front of Amazon CloudFront for the main storefront, Application Load Balancers for backend order processing APIs, and API Gateway for mobile app endpoints. This provided a consistent security posture across all customer touchpoints.

Compliance Mapping

AWS WAF configurations mapped directly to PCI DSS Requirement 6.6 (web application firewall), Requirement 10.6 (log review), and Requirement 11.4 (intrusion detection). Logging was enabled to Amazon S3 for retention and Amazon Athena for query-based reviews.

Automation & Continuous Improvement (WAF-003)

WAF rule deployments are automated using AWS CloudFormation templates integrated into the CI/CD pipeline. Weekly automated scans from Amazon Inspector trigger rule updates. Threat intelligence from AWS and third-party feeds is integrated for dynamic IP set updates.

Implementation Details

  • Managed Rule Groups: AWS Managed Core Rule Set, AWS Managed Bot Control, AWS Managed SQLi/XSS Rules
  • Custom Rules: Scope-down statements targeting checkout paths, geolocation restrictions for non-operational regions
  • WebACL Capacity Units (WCU): 1,600- Priority Settings: PCI compliance rules, managed rules, then custom rules-
  • Logging: AWS WAF logs streamed to Amazon Kinesis Data Firehose and stored in Amazon S3

Results & Impact

Before deployment: Average of 4 compliance-related security incidents per quarter.After deployment: 100% compliance audit pass rate, 97.5% of malicious requests blocked before reaching workloads, checkout abandonment rate reduced by 8% due to improved site performance.

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Executive Summary

Henne Organics deployed AWS WAF in a compliance-driven eCommerce environment to protect its storefront and ensure adherence to strict regulatory requirements. The WAF configuration was tailored to address both industry-standard compliance controls and emerging security threats targeting high-value online transactions.

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