Developed and delivered a privacy-focused feature for the p0deje/Maccy repository, implementing screen capture prevention for the application window. This was achieved by configuring the window’s sharing type to .none using Swift, directly addressing the risk of unauthorized screen recording and enhancing user data protection. The work demonstrated expertise in macOS development and security, with careful attention to privacy controls and change management. No major bugs were fixed during this period, but maintenance and verification of the new privacy feature were completed. The contribution improved the application’s security posture and provided clear technical traceability through a focused, single commit.