Nathan Lam focused on hardening the AWS-based infrastructure for the seek-oss/skuba repository by addressing a critical security vulnerability. He applied a security patch by upgrading the AWS CDK to version 2.167.1, mitigating potential account takeover risks. Nathan managed dependencies using yaml and updated the pnpm-lock.yaml file to ensure all related packages reflected the patch. He maintained traceability and compliance by documenting the mitigation in the project’s changelog. While the work did not introduce new features, it demonstrated careful dependency management and security patching, contributing to the stability and safety of the deployment pipeline over the course of the month.