GPT-5.5

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OpenAI releases GPT-5.5, a more intelligent and efficient model that can handle complex tasks. GPT-5.5 excels at coding, research, and everyday work on a computer, providing better results with fewer tokens.

An update on recent Claude Code quality reports

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Claude's responses worsened for some users due to three separate changes affecting Claude Code, the Claude Agent SDK, and Claude Cowork. We've fixed the issues and will implement changes to prevent similar problems in the future.

Girl, 10, finds rare Mexican axolotl under Welsh bridge

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A 10-year-old girl named Evie found an endangered Mexican axolotl under a bridge in Wales, saving its life. The axolotl, named Dippy, was the first documented discovery in the UK and is one of only 50 to 1,000 left globally.

Bitwarden CLI compromised in ongoing Checkmarx supply chain campaign

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Bitwarden CLI 2026.4.0 was compromised through a GitHub Action in its CI/CD pipeline as part of the Checkmarx supply chain campaign. Users are advised to review CI logs and rotate exposed secrets.

Meta to cut 10% of jobs, or 8k employees

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Meta plans to start layoffs on May 20 to improve efficiency and offset investments in metaverse and AI efforts. The company will let go of employees who made meaningful contributions due to failed metaverse efforts and increased AI investments.

MeshCore development team splits over trademark dispute and AI-generated code

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A team member, Andy Kirby, secretly used AI-generated code to take over the MeshCore ecosystem, sparking a dispute over ownership and control. The core team has now separated from Andy and will continue to develop and release MeshCore firmware and app updates on their official website, meshcore.io.

Incident with multple GitHub services

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GitHub's Status Page - Incident with multiple GitHub services.

Palantir employees are starting to wonder if they're the bad guys

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Palantir employees are questioning the company's involvement in immigration enforcement and its relationship with the Trump administration. The company's leadership has been criticized for its handling of internal dissent and its defense of its work with ICE and the US military.

I am building a cloud

The author is building exe.dev, a cloud platform that addresses the limitations of current cloud services, allowing users to run VMs on their own resources and manage them easily. The goal is to create a cloud that is more flexible and user-friendly, with local NVMe storage, global regions, and a simple, intuitive interface.

French government agency confirms breach as hacker offers to sell data

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France's ANTS agency disclosed a data breach after a threat actor claimed stealing citizen data, potentially exposing 19 million records. The agency advises users to be vigilant about suspicious messages and has notified authorities, but no action is required.

A DIY Watch You Can Actually Wear

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The LILYGO T-Watch Ultra is a DIY smartwatch with ESP32-S3, IP65-rated case, and various features like AI acceleration, Wi-Fi, Bluetooth, and LoRa. It's suitable for complex applications and has a long runtime due to its 1,100mAh battery and improved display.

Your hex editor should color-code bytes

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The user discusses the benefits of using color in hex dumps to make it easier to notice patterns and details in the data. They propose a custom hex editor called hexapoda and suggest that more tools should include color-coded bytes.

Astronomers Find the Edge of the Milky Way

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A team of astronomers found that the Milky Way's star-forming disk ends at 35,000-40,000 light-years from its center. Stars beyond this point are older and likely migrated outward due to the galaxy's spiral waves.

Show HN: Honker – Postgres NOTIFY/LISTEN Semantics for SQLite

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Honker is a SQLite extension and language bindings that add durable pub/sub, task queue, and event streams to SQLite without client polling or a daemon/broker, allowing atomic business writes and side-effect enqueues. It achieves single-digit millisecond reaction time and supports various languages including Python, Node, Rust, Go, Ruby, Bun, and Elixir.

Apple fixes bug that cops used to extract deleted chat messages from iPhones

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Apple fixed a bug that allowed deleted messages to be retained on iPhones due to notifications being stored in the device's database. This issue was exploited by the FBI using forensic tools, raising concerns among privacy activists about authorities accessing deleted data.

I spent years trying to make CSS states predictable

The author describes a problem with CSS where component state is managed through overlap, leading to complexity and potential bugs. They created a system called Tasty that allows component state to be expressed declaratively, making it easier to extend or change components without reopening the state-resolution problem.

Advanced Packaging Limits Come into Focus

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Packaging is now a performance variable, with warpage and mechanical issues complicating continued scaling. Advanced packages are no longer simple structures, but mechanically asymmetrical systems with different layers expanding, softening, and storing stress differently.

WireGuard for Windows Reaches v1.0

Jason Donenfeld announced the v1.0 release of WireGuardNT and WireGuard for Windows with bug fixes and improvements including NdisWdfGetAdapterContextFromAdapterHandle() and proper MTU change notifications. The release also includes 42 bug and correctness fixes for WireGuardNT and a new feature for setting system DNS server programmatically on older Windows 10 versions.

If America's so rich, how'd it get so sad?

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The US has experienced a sharp decline in self-reported happiness since 2020, with no recovery, despite a strong economy and low unemployment. The culprit is likely the ongoing COVID pandemic and its aftermath, including inflation, economic uncertainty, and a uniquely negative news environment.

Writing a C Compiler, in Zig (2025)

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This is a series of articles I wrote while writing paella, following Nora Sandler's Writing a C Compiler. It was both an exercise to learn Zig and a way to waste time instead of looking for work, as I am currently "between jobs". I did not edit them as I collect them here outside of fixing some broken links.

We found a stable Firefox identifier linking all your private Tor identities

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A Firefox-based browser vulnerability allows websites to derive a unique identifier from IndexedDB database ordering, linking activity across origins. Mozilla has fixed the issue in Firefox 150 and ESR 140.10.0.

Jiga (YC W21) Is Hiring

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Jiga streamlines product sourcing by connecting engineers with vetted manufacturers and automating administrative tasks. This saves time and reduces costs, allowing engineers to focus on actual work.

Arch Linux Now Has a Bit-for-Bit Reproducible Docker Image

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Arch Linux now has a reproducible Docker image under the "repro" tag, but pacman is not usable out of the box due to stripped pacman keys. Users must regenerate the pacman keyring before installing packages.

Alberta startup sells no-tech tractors for half price

Ursa Ag, a small Canadian manufacturer, is selling tractors with remanufactured 1990s diesel engines and no electronics for half the price of comparable machines. The company's simple, mechanical design is appealing to farmers who want to avoid modern complexity and high costs.

A Renaissance gambling dispute spawned probability theory

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Mathematicians Blaise Pascal and Pierre de Fermat solved the "problem of points" by considering future possibilities of the score. Their solution, based on expected value, is used in risk assessments and has become a fundamental pillar of modern probability theory.

Investigation uncovers two sophisticated telecom surveillance campaigns

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Citizen Lab exposed two surveillance campaigns using "ghost" companies to exploit phone network vulnerabilities. The campaigns targeted individuals worldwide, using SS7 and Diameter flaws to geolocate phones.

Our newsroom AI policy

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Ars Technica uses generative AI tools in its workflow, but only with human oversight and standards. The site's editorial text is written by humans, and AI output is never treated as an authoritative source.

Isopods of the world

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Isopod Site aims to improve isopod identification through basic anatomy understanding. Selective breeding is used in the hobby to boost unique traits in new lineages.

People Do Not Yearn for Automation

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The tech industry's "software brain" thinking, which sees the world as databases to be controlled, is causing a disconnect with regular people who experience AI as a threat to their humanity. This thinking is leading to a failure to understand why people dislike AI, as it ignores the limits of software and the complexity of human experience.

'Hairdryer used to trick weather sensor' to win Polymarket bet

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French police investigate possible tampering with weather readings at Charles de Gaulle airport to influence Polymarket bets. A hairdryer may have been used to manipulate temperature readings, causing gamblers to win thousands of dollars.