Worked on the Homebrew/homebrew-cask repository to enhance installer security by updating checksum validation logic using Ruby and package management skills. Focused on strengthening installation integrity, the developer delivered a targeted patch that updated checksum values, ensuring that only verified installers are accepted during the installation process. This change was implemented as a single, auditable commit, aligning with secure patch discipline and best practices for software supply chain security. The update reduced the risk of compromised installations across the Homebrew Cask ecosystem, improved user trust, and demonstrated careful attention to detail in maintaining the integrity of open-source software distribution.