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Explore Proton's evolution from a CERN cafeteria passion project to a leading privacy-focused platform in this 24-minute conference talk from Ubuntu Summit 25.10. Learn how Proton began in 2014 with the simple promise of putting privacy first through Proton Mail, an end-to-end encrypted email service, and discover how it has since expanded into a comprehensive ecosystem including Proton VPN, Proton Drive, Proton Pass, and additional products all united by the mission to make privacy the default for everyone. Follow Proton VPN Engineering Director Samuele Kaplun as he traces the company's journey with special focus on deepening ties to open source communities and Ubuntu, examining open source practices at Proton, Proton's presence on Linux, and partnerships with Canonical. Gain insights from Canonical Software Engineer Pedro Avalos Jimenez as he provides a candid examination of porting Proton Mail, Proton Pass, and the Bridge to Snap format, discusses lessons learned from packaging Proton VPN, and outlines the roadmap ahead for these privacy-focused applications on Ubuntu.