Hacker News Highlights20 Aug 2025

8.20.25 | Exploited CodeRabbit for RCE, AGENTS.md for coding agents, Copilot broke audit logs without customer notification

This is a recap of the top 10 posts on Hacker News on Aug 20, 2025.

(00:00) - Intro
(00:21) - How we exploited CodeRabbit: From simple PR to RCE and write access on 1M repos
(01:40) - AGENTS.md – Open format for guiding coding agents
(02:58) - Copilot broke audit logs, but Microsoft won't tell customers
(04:15) - How to Draw a Space Invader
(05:13) - D2 (text to diagram tool) now supports ASCII renders
(06:09) - Candle Flame Oscillations as a Clock
(07:12) - Custom telescope mount using harmonic drives and ESP32
(08:29) - Without the futex, it's futile
(09:46) - Emacs as your video-trimming tool
(10:59) - Ask HN: Why does the US Visa application website do a port-scan of my network?
(12:10) - Outro

How we exploited CodeRabbit: From simple PR to RCE and write access on 1M repos
https://research.kudelskisecurity.com/2025/08/19/how-we-exploited-coderabbit-from-a-simple-pr-to-rce-and-write-access-on-1m-repositories/
https://news.ycombinator.com/item?id=44953032

AGENTS.md – Open format for guiding coding agents
https://agents.md/
https://news.ycombinator.com/item?id=44957443

Copilot broke audit logs, but Microsoft won't tell customers
https://pistachioapp.com/blog/copilot-broke-your-audit-log
https://news.ycombinator.com/item?id=44957454

How to Draw a Space Invader
https://muffinman.io/blog/invaders/
https://news.ycombinator.com/item?id=44956915

D2 (text to diagram tool) now supports ASCII renders
https://d2lang.com/blog/ascii/
https://news.ycombinator.com/item?id=44954524

Candle Flame Oscillations as a Clock
https://cpldcpu.com/2025/08/13/candle-flame-oscillations-as-a-clock/
https://news.ycombinator.com/item?id=44921195

Custom telescope mount using harmonic drives and ESP32
https://www.svendewaerhert.com/blog/telescope-mount/
https://news.ycombinator.com/item?id=44949895

Without the futex, it's futile
https://h4x0r.org/futex/
https://news.ycombinator.com/item?id=44951563

Emacs as your video-trimming tool
https://xenodium.com/emacs-as-your-video-trimming-tool
https://news.ycombinator.com/item?id=44953316

Ask HN: Why does the US Visa application website do a port-scan of my network?
https://news.ycombinator.com/item?id=44959073

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Episoder(507)

6.16.26 | Backdoor in LinkedIn offer, Iroh 1.0, replacing Claude GBT with local model

This is a recap of the top 10 posts on Hacker News on Jun 16, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:19) - A backdoor in a Lin...

16 Jun 12min

6.15.26 | Firewood Splitting Simulator, Your ePub Is fine, Kage—Shadow websites offline

This is a recap of the top 10 posts on Hacker News on Jun 15, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:15) - Firewood Splitting ...

15 Jun 13min

6.14.26 | Banned noise infusion from Census Bureau, Every Frame Perfect, Amazon CEO's talks sparked crackdown on Anthropic models

This is a recap of the top 10 posts on Hacker News on Jun 14, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:18) - Noise infusion bann...

14 Jun 14min

6.13.26 | US government halts Fable 5 and Mythos 5, open source AI must prevail, CRISPR targets "undruggable" cancers

This is a recap of the top 10 posts on Hacker News on Jun 13, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:20) - Statement on US gov...

13 Jun 14min

6.12.26 | Homebrew 6.0.0, human effort needed for attention, AI agent bankrupts operator scanning DN42

This is a recap of the top 10 posts on Hacker News on Jun 12, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:15) - Show HN: Homebrew 6...

12 Jun 13min

6.11.26 | Building an HTML-first site doubled users overnight, πFS, Eric Ries, "The Lean Startup," "Incorruptible" AMA

This is a recap of the top 10 posts on Hacker News on Jun 11, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:20) - Building an HTML-fi...

11 Jun 14min

6.10.26 | Claude Fable 5, old-school graphics, dependency on Claude Fable

This is a recap of the top 10 posts on Hacker News on Jun 10, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:20) - Claude Fable 5 (02:...

10 Jun 15min

6.9.26 | Performative-UI, Apple’s new AI architecture with Google Gemini, Siri AI

This is a recap of the top 10 posts on Hacker News on Jun 9, 2026.Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights(00:00) - Intro (00:19) - Show HN: Performativ...

9 Jun 12min