This is a recap of the top 10 posts on Hacker News on Nov 18, 2025.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

• (00:00) - Intro

Show HN: I built a synth for my daughter
https://bitsnpieces.dev/posts/a-synth-for-my-daughter/
https://news.ycombinator.com/item?id=45900425

Rebecca Heineman has died
https://www.pcgamer.com/gaming-industry/legendary-game-designer-programmer-space-invaders-champion-and-lgbtq-trailblazer-rebecca-heineman-has-died/
https://news.ycombinator.com/item?id=45960368

Core Devices keeps stealing our work
https://rebble.io/2025/11/17/core-devices-keeps-stealing-our-work.html
https://news.ycombinator.com/item?id=45960893

My stages of learning to be a socially normal person
https://sashachapin.substack.com/p/my-six-stages-of-learning-to-be-a
https://news.ycombinator.com/item?id=45937302

Windows 11 adds AI agent that runs in background with access to personal folders
https://www.windowslatest.com/2025/11/18/windows-11-to-add-an-ai-agent-that-runs-in-background-with-access-to-personal-folders-warns-of-security-risk/
https://news.ycombinator.com/item?id=45959795

Astrophotographer snaps skydiver falling in front of the sun
https://www.iflscience.com/the-fall-of-icarus-you-have-never-seen-an-astrophotography-picture-like-this-81570
https://news.ycombinator.com/item?id=45944158

Azure hit by 15 Tbps DDoS attack using 500k IP addresses
https://www.bleepingcomputer.com/news/microsoft/microsoft-aisuru-botnet-used-500-000-ips-in-15-tbps-azure-ddos-attack/
https://news.ycombinator.com/item?id=45955900

FreeMDU: Open-source Miele appliance diagnostic tools
https://github.com/medusalix/FreeMDU
https://news.ycombinator.com/item?id=45953452

Project Gemini
https://geminiprotocol.net/
https://news.ycombinator.com/item?id=45954640

WeatherNext 2: Our most advanced weather forecasting model
https://blog.google/technology/google-deepmind/weathernext-2/
https://news.ycombinator.com/item?id=45954210