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This is a recap of the top 10 posts on Hacker News on Apr 20, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:19) - Vercel April 2026 security incident (02:00) - Changes in the system prompt between Claude Opus 4.6 and 4.7 (04:09) - The RAM shortage could last years (05:22) - Turtle WoW classic server announces shutdown after Blizzard wins injunction (06:15) - Stop trying to engineer your way out of listening to people (07:41) - The Bromine Chokepoint (09:01) - 2,100 Swiss municipalities showing which provider handles their official email (10:11) - A Brief History of Fish Sauce (11:16) - Show HN: Run TRELLIS.2 Image-to-3D generation natively on Apple Silicon (12:54) - Mechanical Keyboard Sounds – A listening Museum (14:15) - Outro Vercel April 2026 security incidenthttps://www.bleepingcomputer.com/news/security/vercel-confirms-breach-as-hackers-claim-to-be-selling-stolen-data/https://news.ycombinator.com/item?id=47824463Changes in the system prompt between Claude Opus 4.6 and 4.7https://simonwillison.net/2026/Apr/18/opus-system-prompt/https://news.ycombinator.com/item?id=47823270The RAM shortage could last yearshttps://www.theverge.com/ai-artificial-intelligence/914672/the-ram-shortage-could-last-yearshttps://news.ycombinator.com/item?id=47822414Turtle WoW classic server announces shutdown after Blizzard wins injunctionhttps://www.pcgamer.com/games/world-of-warcraft/turtle-wow-classic-server-announces-shutdown-after-blizzard-wins-injunction/https://news.ycombinator.com/item?id=47825160Stop trying to engineer your way out of listening to peoplehttps://ashley.rolfmore.com/stop-trying-to-engineer-your-way-out-of-listening-to-people/https://news.ycombinator.com/item?id=47827259The Bromine Chokepointhttps://warontherocks.com/cogs-of-war/the-bromine-chokepoint-how-strife-in-the-middle-east-could-halt-production-of-the-worlds-memory-chips/https://news.ycombinator.com/item?id=478261002,100 Swiss municipalities showing which provider handles their official emailhttps://mxmap.ch/https://news.ycombinator.com/item?id=47828420A Brief History of Fish Saucehttps://www.legalnomads.com/fish-sauce/https://news.ycombinator.com/item?id=47822734Show HN: Run TRELLIS.2 Image-to-3D generation natively on Apple Siliconhttps://github.com/shivampkumar/trellis-machttps://news.ycombinator.com/item?id=47828896Mechanical Keyboard Sounds – A listening Museumhttps://sheets.works/data-viz/keyboard-soundshttps://news.ycombinator.com/item?id=47780743 What is Hacker News Highlights? Daily overview of the Top 10 Hacker News posts. Post and comment summarization by AI.