The best of Hacker News - September 7, 2025

1.
The maths you need to start understanding LLMs

532 points

2.
We hacked Burger King: How auth bypass led to drive-thru audio surveillance

314 points

3.
Qwen3 30B A3B Hits 13 token/s on 4xRaspberry Pi 5

313 points

4.
Show HN: I recreated Windows XP as my portfolio

307 points

5.
How the “Kim” dump exposed North Korea's credential theft playbook

247 points

6.
A Navajo weaving of an integrated circuit: the 555 timer

193 points

7.
Show HN: I'm making an open-source platform for learning Japanese

131 points

8.
Stop writing CLI validation. Parse it right the first time

117 points

9.
The World War Two bomber that cost more than the atomic bomb

110 points

10.
What to do with an old iPad

99 points

11.
Shipping textures as PNGs is suboptimal

90 points

12.
The math of shuffling cards almost brought down an online poker empire

50 points

13.
The key to getting MVC correct is understanding what models are

50 points

14.
Hitting Peak File IO Performance with Zig

36 points

15.
Braincraft challenge – 1000 neurons, 100 seconds, 10 runs, 2 choices, no reward

31 points

16.
Like humans, every tree has its own microbiome, a new study has found

27 points

17.
Show HN: Lightweight tool for managing Linux virtual machines

19 points

18.
Unofficial Windows 11 requirements bypass tool allows disabling all AI features

18 points

19.
The world has a running Rational R1000/400 computer again (2019)

15 points

20.
RFC 3339 vs. ISO 8601

7 points

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