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