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October 23, 2026

Hacker Newsletter #815

Vision without action is a daydream. //Karthik Shankar

hackernewsletter

Issue #815 // 2026-10-23 // View in your browser

#Favorites


Eight Bits of Trust: eMudhra's CA keys cracked in milliseconds
//scotthelme.co comments→

Jailbreaking the Switch 2
//pepsipu comments→

You could have invented transformers from memory
//alexwang comments→

Linux 7.3
//lwn comments→

Pele – Mermaid diagrams as themeable SVG
//pele comments→

Claude Duet
//claude comments→

WorldTUI: I trained a 360M model to pretend to be a terminal
//simedw comments→

What shall I teach my son?
//stevekrouse comments→

Publish fake stats, get cited in LLMs
//peec comments→

It's still OK to enjoy programming
//chriskiehl comments→

#Featured


Security advisory: Critical remote code execution vulnerabilities, update now //php comments→

Today's PHP security release, and how we're strengthening security //thephp.foundation comments→

There isn't an easy exploit for this PHP vulnerability //eliastaylor comments→

#Ask HN


How to deal with shipping AI-written code you don't understand?

If the models are so good, why doesn't OpenAI just start 100 companies?

#Classifieds


Moose Mode: Turn your goals into custom AI workout plans. //apps.apple

Jigsaw puzzles from living artists. No AI, ever. //lininus

Process Over Magic: Beyond Vibe Coding //pragprog

GTM Data Governance Manager @ Launch Darkly //launchdarkly

πŸ‘‰ Classified Ads - the cheapest way to find amazing users

#Show HN


Llmspeed – feel how fast a local LLM runs before you buy the hardware //llmspeed comments→

IKEA – 3D Guide //sael comments→

Esp32sim – Run ESP32 firmware in the browser //github comments→

Death Plan Switch, a self-hosted dead man's switch for solo devs //deathplanswitch comments→

Sumi.css – CSS Framework //github comments→

#Code


How the Claude Code team does code review //claude comments→

Rust Style Guide //google.github comments→

OpenShell – A safe, private runtime for fleets of autonomous AI agents //github comments→

Parser Combinators //t3 comments→

One Hash Bloom Filters //calabro comments→

Clerkenwell – A Handwritten Clojure Notebook //handwritten.danieljanus comments→

#Data


90% of US working hours are spent on tasks not covered well by AI benchmarks //mercor comments→

Timestral: Mistral's time-series foundation models //mistral comments→

DuckDB 2.0.0 LTS β€œCinnamon Teal” //duckdb comments→

Turn regular JavaScript into a neural net //chenglou comments→

#Design


The Future of CSS //joshwcomeau comments→

Nordwand Mono – A monospace font for coders and adventurers //github comments→

No more icons in every menu by default //blog.jim-nielsen comments→

JPEG XL vs. AVIF for web use-cases //jakearchibald comments→

Good type against all odds //unsung.aresluna comments→

#Books


Award-winning AI literature //jamesyu comments→

The Secret Life of Circuits is now in stock everywhere //blog.coredump comments→

Making a 88x31 button book using ImageMagick //k.sosnierz comments→

#Working


Code is clay now //albertodenia comments→

My old job feels distant now //pinecoder comments→

Most advice is right for the person giving it //coached comments→

How employment is changing at Anthropic //anthropic comments→

Why do we have so many meetings? //nber comments→

#Learn


Bleached corals thrive within days when touching healthy neighbour //nature comments→

The recently proposed o(n log n) integer multiplication algorithm [pdf] //web.maths.unsw.edu comments→

In Hilbert space, all things are quantumly possible //quantamagazine comments→

What was a Token Ring network? //dfarq.homeip comments→

The Intel 8087 chip: floating-point addition and subtraction //righto comments→

#Watching


I built a drone with only one motor //youtube comments→

There's never been a better time to go into math (by: 3blue1brown) //youtube comments→

Whatever Happened to Fire Escapes //practical.engineering comments→

#Startup News


Firefox Enterprise //firefox comments→

Meta ordered to pay $25B penalty in New Mexico Cambridge Analytica case //cnbc comments→

Anthropic logged net loss of over $80B in first half of 2026 //reuters comments→

Plex laid off the whole player team //forums.plex comments→

#Fun


SimCity, but with Permits //permit.petercai comments→

Wonderhop – A daily game: guess what most people say, or what none do //wonderhop comments→

Starcraft: Ashfall //starcraft-shooter-2026.pages comments→

Weball: Play Katamari on Websites //funwithcomputervision comments→

The Zelda timeline to catch up before the Ocarina of Time remake //legendofhyrule comments→

Tiny Brutalism – Thanks to HN it's on Steam //store.steampowered comments→

AI-built browser games, collected in one place //playgroundarcade comments→

__END__

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