You can't trust macOS Privacy and Security settings

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The user demonstrates how an app can gain access to a protected folder on macOS despite being listed as restricted in Privacy & Security settings. This is achieved by using the app to access the folder through an Open and Save Panel, which bypasses the need for user consent and allows the app to retain permanent access to the folder.

WireGuard makes new Windows release following Microsoft signing resolution

Jason Donenfeld released updated WireGuard for Windows and WireGuardNT with new features, bug fixes, and performance improvements. Users can update via the built-in updater or download the latest version from the WireGuard website.

1D Chess

1d-chess is a simplified chess variant where white plays against an AI. Assuming optimal play, white has a forced win by checkmating the enemy king.

Industrial design files for Keychron keyboards and mice

https://raw.githubusercontent.com/Keychron/Keychron-Keyboards-Hardware-Design/main/docs/assets/hero-keychron-hardware-design.jpg
Keychron shares production CAD files for compatible accessories and educational use. Users can study and remix designs, but not copy or sell Keychron products.

Helium Is Hard to Replace

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Helium supply chain disruptions due to the war in Iran have caused prices to spike and shortages to loom, with many industries struggling to find substitutes for the essential gas. Helium's unique properties make it crucial for various applications, including MRI machines, semiconductor manufacturing, and fiber optic cable production.

Launch HN: Twill.ai (YC S25) – Delegate to cloud agents, get back PRs

https://twill.ai/landing_assets/code-file.avif
Twill automates coding tasks, allowing developers to focus on high-priority work. It streamlines workflows, enabling teams to ship more and context-switch less.

CPU-Z and HWMonitor compromised

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CPUID website briefly exposed visitors to malware after attackers hijacked its backend, turning trusted download links into malicious ones. The issue has been fixed, but users who clicked on compromised links may have downloaded malware targeting browser data and credentials.

Bluesky April 2026 Outage Post-Mortem

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Bluesky experienced an 8-hour outage on Monday due to a memcached port exhaustion issue caused by a new internal service that sent large batches of requests without proper concurrency limits. The team eventually fixed the issue by expanding the client IP+port space, but not before experiencing a death spiral of port exhaustion and OOMs due to excessive logging and aggressive tuning of GOGC ...

Bild AI (YC W25) Is Hiring a Founding Product Engineer

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Bild AI is a construction tech startup that uses AI and CV to make blueprint reading, cost estimation, and permit applications more efficient. The company is looking for a full-stack engineer to own features, work with customers, and build a user-friendly product.

Clojure on Fennel Part One: Persistent Data Structures

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The user created a library called fennel-cljlib that brought Clojure features to the Lua runtime, but it had performance issues due to its copy-on-write approach. They then created a new library called immutable.fnl with a Persistent HAMT implementation, which improved performance and allowed for the development of a Clojure-to-Fennel compiler called ClojureFnl.

A compelling title that is cryptic enough to get you to take action on it

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The text outlines a structured approach to writing a comprehensive article, breaking down complex topics into manageable sections and using transitional paragraphs to guide the reader. This approach helps to establish trust with the reader and provides a clear, step-by-step explanation of the topic at hand.

Mysteries of Dropbox: Testing of a Distributed Sync Service (2016) [pdf]

Researchers developed a formal model of file synchronizer behavior using Quviq QuickCheck, a testing framework that generates random test cases. The model was used to test Dropbox, Google Drive, and ownCloud, exposing unexpected behavior in two out of three systems, including situations where data could be lost.

The difficulty of making sure your website is broken

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The author created a Go program to manage test certificates for a Certificate Authority, specifically to host websites with revoked or expired certificates, which is a tricky task. The program uses Lego to request certificates, checks for revocation, and waits for the correct certificate state before serving it to the webserver.

FBI used iPhone notification data to retrieve deleted Signal messages

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The FBI recovered deleted Signal messages from an iPhone by extracting data from the device's notification database. The messages were preserved in internal memory due to the defendant's iPhone settings and iOS's data caching capabilities.

How NASA built Artemis II’s fault-tolerant computer

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I still prefer MCP over skills

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The author is against the "Skills" standard for LLMs, preferring the Model Context Protocol (MCP) for service integration. MCP provides a more practical and standardized way to connect LLMs to services.

HBO Obtains DMCA Subpoena to Unmask 'Euphoria' Spoiler Account on X

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HBO's parent company Warner Bros. Discovery sent a DMCA notice to X for spoilers of unaired Euphoria episodes. X was ordered to share account information to identify the person behind the infringing account.

RSoC 2026: A new CPU scheduler for Redox OS

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Akshit Gaur modernized Redox OS's process scheduling subsystem by replacing Round Robin with Deficit Weighted Round Robin, allowing priority assignment.

Penguin 'Toxicologists' Find PFAS Chemicals in Remote Patagonia

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Scientists used leg bands with chemical sensors on 54 Magellanic penguins to detect pollutants in their environment. The study found PFAS in over 90% of the bands, revealing exposure to pollutants in a remote region.

C++: Freestanding Standard Library

A freestanding C++ implementation operates without a hosted operating system, lacking heap allocation, system calls, and exception support. It provides a minimal subset of the language and library, including headers like <cstdint>, <cstddef>, and <limits>, but excludes components like <thread> and <iostream>.

A new trick brings stability to quantum operations

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Researchers at ETH Zurich have developed a highly stable swap gate for neutral atom qubits using geometric phases. This robust gate can be applied to 17,000 qubits simultaneously with a precision of over 99.9 percent.

France to ditch Windows for Linux to reduce reliance on US tech

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France plans to switch from Windows to an open source operating system to regain control over its digital destiny and reduce reliance on US tech companies. This move is part of France's effort to achieve digital sovereignty and reduce dependence on US technology.

Native Instant Space Switching on macOS

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The user is frustrated with MacOS window management, specifically the inability to instantly switch spaces without animation. They found a solution called InstantSpaceSwitcher, a menu bar app that achieves instant space switching without drawbacks.

Deterministic Primality Testing for Limited Bit Width

The Miller-Rabin primality test was improved upon by Agrawal, Kayal, and Saxena in 2002 with a deterministic polynomial-time algorithm. Deterministic Miller-Rabin can be used for fast primality testing with a tunable parameter to increase correctness.

Supply chain nightmare: How Rust will be attacked and what we can do to mitigate

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The Rust ecosystem is vulnerable to supply chain attacks due to its centralized package repository and lack of a comprehensive standard library. Dev Containers and other security measures can help mitigate these risks, but thinking like attackers and learning their tactics is essential for building secure-by-design systems.

We've raised $17M to build what comes after Git

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GitButler, a tool for software development, has raised $17M in Series A funding to redesign the way developers collaborate. The goal is to create a more social and intuitive platform that removes friction from collaboration and integrates AI tools seamlessly.

DRAM has a design flaw from 1966. I bypassed it [video]

Code is run more than read (2023)

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The author emphasizes the importance of considering users and maintainability in software development, and that code is a means to an end, not an end itself. They also highlight common software development dysfunctions and the need for a stronger ethical stand to not harm users, while acknowledging business realities.

Why I'm Building a Database Engine in C#

The author built an ACID database engine called Typhon in C# despite common assumptions that managed languages are unsuitable for high-performance software, and found that modern C# provides features like unsafe code, raw pointers, and constrained generics that allow for efficient and safe development. By leveraging these features and the .NET ecosystem, the author was able to achieve ...

Generative art over the years

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The user has been making generative art since 2016, starting as a programming exercise and evolving into a personal journey of self-expression and discovery. Through experimentation and learning various algorithms and techniques, the user has developed a "vocabulary" of creative tools that inform their artistic decisions and help them convey a personal aesthetic.