10.21.26 | DeepInfer high performance DeepSeek inference, eMudhra intermediate CA compromise, Critical PHP security release

This is a recap of the top 10 posts on Hacker News on Oct 21, 2026.

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

• (00:00) - Intro
• (00:18) - DeepInfer: High-performance inference framework for DeepSeek models
• (01:29) - eMudhra intermediate CA compromise
• (02:45) - Upcoming critical PHP security release (CVE-2026-109618 / -109619)
• (03:57) - Show HN: SimCity, but with Permits
• (05:09) - Voxtral 3
• (06:24) - Apple broke an essential presentation feature of iPads
• (07:30) - What shall I teach my son?
• (08:39) - Ofcom concedes defeat in 4chan case
• (09:40) - The Future of CSS
• (10:48) - Google open-sources TorchTPU, a native PyTorch back end for TPUs
• (11:42) - Outro

DeepInfer: High-performance inference framework for DeepSeek models
https://github.com/deepseek-ai/DeepInfer
https://news.ycombinator.com/item?id=50163277

eMudhra intermediate CA compromise
https://emudhra.we-have-a-problem.com/
https://news.ycombinator.com/item?id=50166579

Upcoming critical PHP security release (CVE-2026-109618 / -109619)
https://news-web.php.net/php.announce/509
https://news.ycombinator.com/item?id=50172041

Show HN: SimCity, but with Permits
https://permit.petercai.com/
https://news.ycombinator.com/item?id=50170593

Voxtral 3
https://mistral.ai/news/voxtral-3/
https://news.ycombinator.com/item?id=50168396

Apple broke an essential presentation feature of iPads
https://teddysvoronos.com/2026-10-19-apple-broke-an-essential-presentation-feature-of-ipads/
https://news.ycombinator.com/item?id=50165208

What shall I teach my son?
https://stevekrouse.com/ends
https://news.ycombinator.com/item?id=50169707

Ofcom concedes defeat in 4chan case
https://prestonbyrne.com/2026/10/20/ofcom-concedes-defeat/
https://news.ycombinator.com/item?id=50167028

The Future of CSS
https://www.joshwcomeau.com/css/interop-2027/
https://news.ycombinator.com/item?id=50175070

Google open-sources TorchTPU, a native PyTorch back end for TPUs
https://github.com/google-pytorch/torch_tpu
https://news.ycombinator.com/item?id=50169053