Hacker News on 5 March 2021

• 30k U.S. organizations newly hacked via holes in Microsoft Exchange Server
• Valve's Proton Has Enabled 7000 Windows Games on Linux
• Show HN: Svelte NodeGUI, a lightweight Electron alternative with native UI
• Open source projects should run office hours
• 'Hovering ship' photographed off Cornish coast by walker
• Thanks HN: Lessons learned after Google nearly killed my site
• Bring Your Own Client
• Symbolics.jl: A Modern Computer Algebra System for a Modern Language
• Oakland bans the use of combustion engine-powered leaf blowers and trimmers
• Facial recognition can predict person’s political orientation with 72% accuracy