Matthew Fry focused on security hardening within the GeoscienceAustralia/dea-config repository, addressing S3 access governance by removing public-read ACLs from YAML configuration files. He leveraged his skills in configuration management and YAML to enforce stricter bucket-level access policies, thereby reducing the risk of unintended public exposure of S3 objects. His work improved audit readiness and aligned security practices across multiple environments. By maintaining clear commit traceability and providing explicit commit messages, Matthew ensured that future reviews and compliance checks would be straightforward. The depth of his contribution lay in strengthening security posture through targeted, well-documented configuration changes rather than feature development.