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

Vercel April 2026 security incident
https://www.bleepingcomputer.com/news/security/vercel-confirms-breach-as-hackers-claim-to-be-selling-stolen-data/
https://news.ycombinator.com/item?id=47824463

Changes in the system prompt between Claude Opus 4.6 and 4.7
https://simonwillison.net/2026/Apr/18/opus-system-prompt/
https://news.ycombinator.com/item?id=47823270

The RAM shortage could last years
https://www.theverge.com/ai-artificial-intelligence/914672/the-ram-shortage-could-last-years
https://news.ycombinator.com/item?id=47822414

Turtle WoW classic server announces shutdown after Blizzard wins injunction
https://www.pcgamer.com/games/world-of-warcraft/turtle-wow-classic-server-announces-shutdown-after-blizzard-wins-injunction/
https://news.ycombinator.com/item?id=47825160

Stop trying to engineer your way out of listening to people
https://ashley.rolfmore.com/stop-trying-to-engineer-your-way-out-of-listening-to-people/
https://news.ycombinator.com/item?id=47827259

The Bromine Chokepoint
https://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=47826100

2,100 Swiss municipalities showing which provider handles their official email
https://mxmap.ch/
https://news.ycombinator.com/item?id=47828420

A Brief History of Fish Sauce
https://www.legalnomads.com/fish-sauce/
https://news.ycombinator.com/item?id=47822734

Show HN: Run TRELLIS.2 Image-to-3D generation natively on Apple Silicon
https://github.com/shivampkumar/trellis-mac
https://news.ycombinator.com/item?id=47828896

Mechanical Keyboard Sounds – A listening Museum
https://sheets.works/data-viz/keyboard-sounds
https://news.ycombinator.com/item?id=47780743