Hacker News Daily — September 18, 2026
30 stories · September 18, 2026
In this issue
- 1
OpenJev
openjev.com · 491 points · Discussion
SemIf Semantic ifs from open models, in your browser. Unsloppify site A live, local experiment Decision model in your browser. A local model can either read probabilities for your allowed options…
- 2
Cloudflare Quick Tunnels
try.cloudflare.com · 445 points · Discussion
Now with JSON output for coding agents Localhost, meet the Internet. One command turns the server on your laptop into a public, encrypted URL on Cloudflare's edge. No account. No DNS. No open ports. $…
- 3
Jemalloc 5.4.0
github.com · 317 points · Discussion
This release contains over 160 commits, focusing on the technical debts cleaning including refactorings, bug fixes, test coverage improvement, and option cleanups. The release also includes…
- 4
How to Write with an LLM
sockpuppet.org · 309 points · Discussion
Two simple rules that let LLMs streamline and improve your writing without pasteurizing and jacking it with corn syrup. It’s tricky to write about writing. It comes across as a brag; you’re implying…
- 5
US Military had close call after using AI for hallucinated intelligence report
cnn.com · 289 points · Discussion
The intelligence report, circulated across the US military this spring in the midst of the war with Iran, immediately set off alarm bells: A Chinese ship in the Middle East was transporting components…
- 6
Android 17 is the first since 3.x to add new APIs without releasing to the AOSP
grapheneos.social · 233 points · Discussion
Read via the links — full text wasn’t available.
- 7
Inside ZCode: Silently uploading your Git history to the cloud
blog.ferstar.org · 218 points · Discussion
I am not a native English speaker; this article was translated by AI. It started with a routine check while freeing up disk space: ~/.zcode was taking up over 700MB. After digging into it…
- 8
I vibed a proof of Conway's conjecture
overreacted.io · 178 points · Discussion
https://github.com/gaearon/conway-refinement#why-i-think-its...
- 9
North Korean nuclear test sets off years of earthquakes
science.org · 155 points · Discussion
https://archive.is/xjmvA
- 10
Korea raises data breach fines to 10% of revenue
koreajoongangdaily.com · 139 points · Discussion
Companies behind major negligent data leaks can now face fines of up to 10 percent of annual revenue under revised privacy rules. Personal Information Protection Commission Chairperson Song Kyung-hee…
- 11
Border agents can search cellphones without a warrant or reasonable suspicion
lawandcrime.com · 122 points · Discussion
Read via the links — full text wasn’t available.
- 12
Show HN: Cactus Needle 3: 8-29MB automation models can match DeepSeek V4 Flash
cactuscompute.com · 121 points · Discussion
Hey HN, Henry from Cactus here. We submitted Needle 2 here a few weeks ago, and the feedback in the discussion thread was incredibly valuable, thanks! Thanks to all that feedback, we’ve been able to…
- 13
Photon-Emission-Guided Laser Fault Injection Enables RP2350 Secure Debug
donjon.ledger.com · 116 points · Discussion
TL;DR — Photon-emission microscopy allowed us to locate a register responsible for the enabling of debug features on the Raspberry Pi microcontroller. — Laser pulses at two nearby positions then…
- 14
C++26: Trivial infinite loops are no longer undefined behaviour
sandordargo.com · 115 points · Discussion
Let’s start with a question! Is this program well-defined? 1 2 3 4 int main () { while ( true ); } If you said yes, you’d be wrong — at least before C++26. A while (true); loop with no side effects…
- 15
Minimal Phone 2
minimalcompany.com · 114 points · Discussion
get $100 OFF for a limited time minimal phone 2 $599 $699 save $100 pre-order now Minimal Phone 2 focus on what matters. use your phone. don't let it use you. the compact, focus-first phone with a…
- 16
How SpaceX streamlined the Raptor engine
construction-physics.com · 101 points · Discussion
If you’re reading this, there’s a very good chance you’ve seen this famous image of three iterations of SpaceX’s Raptor rocket engine. The Raptor engine was developed for SpaceX’s Starship spacecraft…
- 17
Saving another 100TB of RAM
blog.cloudflare.com · 84 points · Discussion
Cloudflare operates at a scale so big that even after working here for years, it doesn’t seem real. We have thousands of servers all over the world with petabytes of RAM and millions of CPU cores, and…
- 18
Xcode 27.1 Beta Release Notes
developer.apple.com · 74 points · Discussion
Read via the links — full text wasn’t available.
- 19
Our brain evolved from two primitive nervous systems that merged: Study
newscientist.com · 66 points · Discussion
https://archive.is/1CFX9 https://med.stanford.edu/news/all-news/2026/09/two-separate-...
- 20
The first new cat species discovered in 100 years
nationalgeographic.com · 66 points · Discussion
https://archive.ph/cgMTM
- 21
Mathematicians Build Long-Awaited Graph Sandwich
quantamagazine.org · 55 points · Discussion
In 2004, two mathematicians hypothesized a powerful kind of sandwich. They were studying graphs, which are collections of points (called vertices) and lines (called edges). Graphs might represent…
- 22
Warez: The Infrastructure and Aesthetics of Piracy (2021)
archive.org · 53 points · Discussion
When most people think of piracy, they think of Bittorrent and The Pirate Bay. These public manifestations of piracy, though, conceal an elite worldwide, underground, organized network of pirate…
- 23
Cache-to-Cache: Direct Semantic Communication Between LLMs (2025)
arxiv.org · 41 points · Discussion
View PDF HTML (experimental) Abstract: Multi-LLM systems harness the complementary strengths of diverse Large Language Models, achieving performance and efficiency gains that are not attainable by a…
- 24
Show HN: Scry, programmable internet search w/ congestion pricing
scry.io · 34 points · Discussion
Meet Scry, a 500 TB NVMe internet index in ClickHouse that you can run ~arbitrary readonly SQL and some of Datalog over, and I handle the problem of resource-contention with congestion-based…
- 25
A search-and-inference database from scratch in pure Zig
antfly.io · 30 points · Discussion
My colleague Rowan summarized our ambitious goal for Antfly over a year ago: perfect search! This goal is silly, ambitious, unobtainable, and perfect for us. Hearing grandiose technologists talk about…
- 26
The Implications of Linguistic Illegibility for LLM Security
arxiv.org · 26 points · Discussion
View PDF HTML (experimental) Abstract: LLMs are trained to generate natural language. However, various strands of evidence indicate that an LLM's externalized linguistic outputs and…
- 27
Show HN: Ax-check.com – Can agents use your product?
ax-check.com · 23 points · Discussion
I'm the co-founder of Gauge, and I built ax-check.com to quickly test how well coding agents can onboard to your product. You'll get a scorecard, specific suggested fixes, and three full coding…
- 28
Senior Engineers Are the Next DRAM Shortage
blog.herlein.com · 13 points · Discussion
18 Sep 2026, 00:00 19 min read There’s a shortage coming that nobody’s put on a slide yet: senior engineers. Every company on earth is about to want one who can drive a fleet of agents with judgment —…
- 29
From Geometry to Algebra and Back Again: 4000 Years of Papers (2023) [video]
youtube.com · 6 points · Discussion
Read via the links — full text wasn’t available.
- 30
Cekura (YC F24) Is Hiring
ycombinator.com · Discussion
About Cekura Cekura is building the infrastructure for self-improving conversational agents. Teams use Cekura to test, monitor, debug, and improve AI agents across voice, chat, SMS, phone, and web. We…