Popular：
Virtualization DNS security formal verification reachability analysis compiler errors macro conflict web extension development framework Bitmap Graphics API inconsistencies All Tags

Reverse Engineering Samsung NX mini Firmware Compression: Uncovering Fujitsu RELC

2025-05-07
Reverse Engineering Samsung NX mini Firmware Compression: Uncovering Fujitsu RELC

This post details the reverse engineering of a proprietary LZSS compression algorithm used in the firmware of Samsung NX mini, NX3000/NX3300, and Galaxy K Zoom cameras. The initial goal was to understand enough of the algorithm to extract and disassemble the ARM code, but it turned out to be Fujitsu's RELC (Rapid Embedded Lossless Data Compression), a hardware IP block on their ARM SoCs. By meticulously analyzing the compressed stream, the researchers determined the bitmask, offset, and length encoding schemes, ultimately creating a complete decompressor that successfully decompressed all firmware files. This research not only reveals the compression mechanism of the Samsung camera firmware but also highlights the challenges and techniques involved in reverse engineering unknown compression algorithms.

Read more
(op-co.de)
Development compression algorithm

pgEdge Open Sources Core Components, Embracing the PostgreSQL Ecosystem

2025-09-11

pgEdge, a company focused on distributed PostgreSQL, announced that it has relicensed its core components—including the Spock replication engine, Snowflake sequence generator, and Lolor large object logical replication extension—under the PostgreSQL License, making them open source! This move signifies pgEdge's commitment to open source and its desire to contribute more to the PostgreSQL ecosystem. Developers can now access the source code of these components on GitHub and participate in their development. pgEdge also offers cloud, container, and VM deployment options for easy user access.

Read more
(www.pgedge.com)
Development

Coldplay Kiss Cam Leads to CEO's Resignation

2025-07-20
Coldplay Kiss Cam Leads to CEO's Resignation

A couple's intimate moment on a Coldplay concert's jumbotron went viral, leading to the resignation of Astronomer CEO Andy Byron. Footage of Byron and his company's chief people officer, Kristin Cabot, cuddling sparked a meme frenzy and online investigation. Byron, who is married, resigned after the company launched an inquiry. The incident also inspired a retro-style video game, "Coldplay Canoodlers," quickly created by musician Jonathan Mann using ChatGPT and a novel coding technique called "vibe coding." The speed at which the event unfolded and a game was created highlights the internet's capacity for rapid-fire spectacle.

Read more
(www.forbes.com)
Tech viral event

Erythritol: The Sweetener That Might Increase Your Stroke Risk?

2025-07-20
Erythritol: The Sweetener That Might Increase Your Stroke Risk?

Erythritol, a sugar alcohol found in many low-carb and sugar-free products, has been linked to an increased risk of heart attack and stroke in recent studies. New research from the University of Colorado Boulder delves into the cellular mechanisms, revealing how erythritol impacts brain blood vessels. In lab experiments, erythritol reduced nitric oxide (vasodilator), increased endothelin-1 (vasoconstrictor), and impaired the production of t-PA (clot-buster), leading to constricted blood vessels and increased clot formation. It also increased the production of reactive oxygen species (ROS), damaging cells and causing inflammation. While this study was in vitro, researchers urge consumers to monitor their erythritol intake and consider the potential risks associated with this widely used sweetener.

Read more
(www.sciencedaily.com)
Tech sugar substitute

arXivLabs: Experimenting with Community Collaboration

2025-02-28
arXivLabs: Experimenting with Community Collaboration

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations working with arXivLabs embrace our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only partners with those who share them. Have an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

Read more
(arxiv.org)
Development

Archimedean-Shaped Ceramic Powders Resist Extreme Heat and Oxidation

2025-03-10
Archimedean-Shaped Ceramic Powders Resist Extreme Heat and Oxidation

A research team synthesized high-quality boride ceramic powders with Archimedean shapes, exhibiting exceptional heat and oxidation resistance. Using a refined precursor-carbon/boron thermal reduction process and a novel sol-gel method, they produced high-purity ZrB2 and HfB2 powders. Control over particle size and shape, achieved through the addition of dispersants, resulted in powders with superior crystallinity and a unique polyhedral morphology. These powders formed a thin protective oxide layer (86.43 micrometers after 3 hours at 1400°C), significantly outperforming similar materials. This breakthrough offers a new approach for developing ultra-high-temperature materials.

Read more
(phys.org)
Tech boride ceramics Archimedean polyhedra high-temperature materials

Optimizing UTF-8 Decoding with a Lookup Table: Branchless Approach

2025-09-06
Optimizing UTF-8 Decoding with a Lookup Table: Branchless Approach

This article explores optimizing UTF-8 decoding by using a lookup table to avoid branch prediction overhead. The author details creating a 256-byte lookup table that maps the lead byte of a UTF-8 sequence to its length. This replaces branching with simple array access, improving decoding efficiency. While adding a 256-byte memory cost, this approach can significantly boost performance in many scenarios.

Read more
(nemanjatrifunovic.substack.com)
Development Decoding Lookup Table

Ambsheets: Exploring Spreadsheet Uncertainty

2025-02-05
Ambsheets: Exploring Spreadsheet Uncertainty

Imagine a spreadsheet where a single cell can hold multiple values simultaneously. That's the core idea behind Ambsheets, a project extending traditional spreadsheets to handle 'amb values'—values representing multiple possibilities. This allows users to easily explore various scenarios, like budgeting for different car and apartment prices, without tedious restructuring. Unlike Excel's What-If Analysis, Ambsheets offers a cleaner interface and powerful automatic combination capabilities, efficiently managing multi-dimensional possibility spaces. Researchers are currently exploring Ambsheets' applications in filtering, visualization, and continuous distributions, aiming to develop it into a more powerful scenario exploration tool.

Read more
(www.inkandswitch.com)
Development uncertainty

Type: Hiring a Senior Software Engineer

2025-04-03
Type: Hiring a Senior Software Engineer

Type, an AI-native document editor backed by Y Combinator, is looking for a product-minded senior software engineer to join its small team in Brooklyn. The ideal candidate will have extensive experience building complex web applications, be proficient in React and TypeScript, and possess strong product intuition. Responsibilities include building advanced rich text editing features, collaborative editing capabilities, and LLM-based writing and editing tools. Competitive salary, stock options, and comprehensive benefits are offered.

Read more
(www.ycombinator.com)
Development

The Complexity Trap in Software Development: Why We Build 'Code Pyramids'

2025-09-16
The Complexity Trap in Software Development: Why We Build 'Code Pyramids'

This article explores the pervasive issue of complexity in software development. Using the metaphor of pyramids, the author likens complex software systems to impressive but ultimately empty structures, expensive to maintain and lacking substance. From a marketing perspective, complexity is often presented as a high-status symbol, but ultimately simplicity and efficiency reign supreme. The article analyzes various factors contributing to complexity, including the allure of creativity, legacy systems, team dynamics, and the pressure to innovate. It urges developers to strike a balance between simplicity and practicality, avoiding over-engineering and building truly valuable software.

Read more
(kyrylo.org)
Development

The Ratchet Effect: How Engineers Build Reputation at Big Tech

2025-01-08

Engineer reputation at large tech companies isn't solely about technical skill; it's a gradual process. Starting with low-level tasks, engineers build trust and gain access to higher-profile projects through consistent success. This "ratchet effect" makes reputation slow to change. Even mistakes can be overcome with continued delivery. However, repeated failures lead to a downward spiral. The author advises new hires to focus on smaller projects to build a solid reputation, avoiding risky attempts to jump to high-profile work immediately.

Read more
(www.seangoedecke.com)
Development engineer reputation ratchet effect

TikTok's Return to the App Store Imminent

2025-02-14
TikTok's Return to the App Store Imminent

Bloomberg's Mark Gurman reports that a letter from Trump-era Attorney General Pam Bondi to Apple allows the restoration of TikTok on the App Store. Currently, iPhones with TikTok can continue using it, and a web version exists. However, updates and re-downloads are blocked, and transfer between iPhones (crucially impacting Apple's upcoming low-end launch) is impossible. Apple confirmed TikTok's return for Thursday evening. Previously, Apple and Google were legally obligated to remove TikTok due to ByteDance's failure to divest. Despite a bill passed and signed by President Biden, his administration delayed enforcement, leaving the decision to the Trump administration. Trump, after initially pushing for a ban, later supported TikTok's continued availability, granting ByteDance a 75-day extension to negotiate with US firms and potentially the government.

Read more
(9to5mac.com)
Tech

Doctor Droid: AI-Powered Incident Response for Engineering Teams

2025-02-14
Doctor Droid: AI-Powered Incident Response for Engineering Teams

Doctor Droid is building a smart assistant to help engineering teams quickly resolve production incidents. This open-source platform, used globally, aims to reduce downtime and boost developer productivity. Their vision is to empower any team member to debug common production issues without needing senior engineers. Backed by Accel and a Y Combinator W23 graduate, Doctor Droid is looking for passionate developers to join their team.

Read more
(www.ycombinator.com)
Development Incident Response

The Hardest Focus App: No Mercy, No Excuses

2025-08-23
The Hardest Focus App: No Mercy, No Excuses

Forget cute focus apps; this one's brutal. There's no start button – the only way to use it is to put your phone away. Pick it up, and a deafening siren will sound, erasing all progress. It's a paid app, no free features, and the developers argue that if you can't afford it, you're not their target audience. This app is designed to be the hardest and most effective, a defense system against the attention-grabbing economy, forcing discipline through harsh penalties for distraction.

Read more
(apps.apple.com)
Development discipline paid app

Netflix's Unified Data Architecture: Model Once, Represent Everywhere

2025-06-14
Netflix's Unified Data Architecture: Model Once, Represent Everywhere

Netflix's exploding content offerings — films, series, games, live events, ads — have created a complex web of supporting systems. To tackle duplicated models, inconsistent terminology, and data quality issues, Netflix built the Unified Data Architecture (UDA). UDA is a knowledge graph enabling teams to define models once and reuse them consistently across systems. Leveraging an internal metamodel called Upper, UDA translates domain models into various technical data structures (GraphQL, Avro, SQL, etc.), automating data movement and transformation between containers. This boosts efficiency and data consistency. Two production systems, Primary Data Management (PDM) and Sphere, showcase UDA's power, handling authoritative reference data and self-service operational reporting respectively.

Read more
(netflixtechblog.com)
Development Data Architecture

HyperEssays: An Ongoing Digital Project for Montaigne's Essays

2024-12-22
HyperEssays: An Ongoing Digital Project for Montaigne's Essays

HyperEssays is a project dedicated to creating a modern and accessible online edition of Michel de Montaigne's Essays. The website hosts four editions of the Essays, including the original French, early modern English translations, and a modern English translation, which are continuously updated and improved. The project aims to provide readers with a convenient reading experience and rich interpretive resources, including annotations, indexes, and downloadable PDFs.

Read more
(hyperessays.net)
Misc Montaigne Essays

EZ-TRAK: Open-Source Satellite Tracking Suite

2025-05-04
EZ-TRAK: Open-Source Satellite Tracking Suite

EZ-TRAK is an open-source satellite tracking suite designed for amateur radio operators, weather satellite enthusiasts, and educational purposes. It uses a portable satellite dish antenna and a BLE device to track satellites in real-time, providing azimuth and elevation data for optimal antenna positioning. Features include a graphical user interface, pass prediction, data recording, and support for multiple data sources. Detailed setup and usage instructions are provided.

Read more
(github.com)
Tech satellite tracking

Moving Objects in 3D Space with Math

2025-08-20
Moving Objects in 3D Space with Math

This article explores moving objects in 3D space, specifically along a spherical helix path. Starting with simple circular motion, the author explains how sine and cosine functions can control an object's x, y, and z coordinates to create spirals and more complex trajectories. The core concept is using parametric equations, defining the object's 3D position as a function of time. What appears as complex dynamic effects are ultimately derived from simple mathematical functions.

Read more
(visualrambling.space)
Development 3D graphics

Quad9: A Non-Profit DNS Provider Seeks Donations

2025-03-25
Quad9: A Non-Profit DNS Provider Seeks Donations

Quad9, a non-profit organization, relies on grants and partnerships to operate. Using Quad9 can prevent ransomware attacks, protect your bank account, and stop your computer from being used in illicit criminal activities. These protections, and millions of other interventions, directly save you, your business, and the companies you rely on (like banks and e-commerce firms) money. We hope this understanding inspires you to donate to Quad9, individually or through corporate sponsorship.

Read more
(www.quad9.net)
Tech non-profit

XMPP (Snikket) for Reliable Couple Communication: A Success Story

2025-07-30
XMPP (Snikket) for Reliable Couple Communication: A Success Story

The author and his wife switched from Matrix to XMPP (using Snikket) for all their calls and chats, with remarkable success. While Matrix suffered from unreliable audio and video, Snikket provided reliable voice and video calls, seamless messaging, and photo sharing, even with frequent network changes. The author's wife, a typical end-user, found it easy to use. The only drawback is Snikket's lack of multi-domain support, limiting communication with other XMPP users.

Read more
(neilzone.co.uk)
Misc

arXivLabs: Community Collaboration on arXiv Features

2025-05-16
arXivLabs: Community Collaboration on arXiv Features

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved share arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners who adhere to them. Got an idea for a project that will benefit the arXiv community? Learn more about arXivLabs.

Read more
(arxiv.org)
Development

Homomorphic Encryption and Local-First Software: A Trade-off?

2025-06-18
Homomorphic Encryption and Local-First Software: A Trade-off?

This article explores the challenges of using homomorphic encryption to protect private data in local-first software. While homomorphic encryption allows computation without decryption, it introduces significant performance and storage overheads. The author demonstrates the practical limitations of homomorphic encryption on CRDTs by building a homomorphically encrypted 'last-write-wins' register CRDT. The article highlights how homomorphic encryption requires operations under worst-case input assumptions, drastically increasing space and time complexity. Ultimately, the author concludes that securing local-first apps without severely degrading usability remains an open problem.

Read more
(jakelazaroff.com)
Development local-first software

Trump's Budget Proposal Slams CISA with $491M Cut, Accusing it of Censorship

2025-05-06
Trump's Budget Proposal Slams CISA with $491M Cut, Accusing it of Censorship

President Trump's proposed 2026 budget includes a $491 million (17%) cut to the Cybersecurity and Infrastructure Security Agency (CISA), framing it as a purge of the so-called "censorship industrial complex." The White House accuses CISA of prioritizing combating misinformation over protecting critical systems. While CISA faces significant cuts, the overall Department of Homeland Security budget receives a substantial boost for increased deportations and border wall construction. The TSA and FEMA also face budget reductions. This proposal, however, requires Congressional approval and is expected to face strong opposition.

Read more
(www.theregister.com)
Tech Budget Cuts

DIY iOS Music Player: A Developer's Revolt Against Apple's Lock-in

2025-05-22

Frustrated with Apple Music's limitations and subscription model, a developer built their own iOS music player from scratch. The player boasts local file playback, iCloud sync, and full-text search, cleverly leveraging SQLite's FTS5 for efficient fuzzy search. The development journey saw a shift from React Native to SwiftUI, employing a backend-like architecture for streamlined data flow and concurrency. While the final product fulfills the developer's needs, the experience highlights Apple's restrictive developer tools and app distribution policies, hindering personal app development in stark contrast to the ease of software creation in the AI era.

Read more
(nexo.sh)
Development Music Player

Building Games: 3 Months vs. 3 Days with LLMs

2025-08-25

A software engineer with 15 years of experience built two web-based card games based on Argentinian card games in his spare time: one in 3 months, the other in 3 days. The first, Truco, was built entirely by hand using Go for the backend and React for the frontend. The second, Escoba, leveraged the power of LLMs (Claude) to drastically reduce development time for the backend. The author details the process using Go, WASM, and React, providing a minimal Tic-Tac-Toe game as a starting point to encourage others to try game development.

Read more
(marianogappa.github.io)
Game

Network Security Breakthrough: Trapping Intruders in a 'Network from Hell'

2024-12-17
Network Security Breakthrough: Trapping Intruders in a 'Network from Hell'

Researchers at the University of Oulu's SensorFu team have developed a novel network security defense system inspired by the LaBrea tarpit technique. The system intercepts ARP requests and delays SYN-ACK responses, creating a multitude of virtual devices on the network to confuse intruders. This forces attackers to waste significant time identifying real devices, providing administrators with crucial time to patch vulnerabilities. Tests showed the system extends scan times to hours, drastically reducing attack success rates. Lightweight, efficient, and easy to deploy, this system offers robust network protection for organizations of all sizes.

Read more
(medium.com)
Development intrusion detection proactive defense

AI Coding Tools: A Paper Hammer?

2025-08-10

The author expresses frustration with AI coding tools after trying them out. Blog posts and news articles often hype AI's ability to automatically write code and even build entire libraries, but the author's experience is drastically different. While the author finds AI tools helpful for simple tasks like completing sentences or finding type annotations, complex problems result in useless or buggy code, often introducing new bugs. The author likens this to a cool-looking but fragile 'paper hammer' incapable of real work. This leads to a reflection on the discrepancy between the perceived usefulness of AI tools and the author's own negative experience. This falls under the Development category.

Read more
(whynothugo.nl)
Development

Emacs on macOS: Unraveling a Memory Leak Mystery

2025-07-31

The author has long struggled with performance issues in Emacs on macOS: ever-increasing memory usage, eventually leading to freezes. After investigation, the root cause was found to be in the way `[NSApp run]` is invoked, resulting in massive memory allocation and deallocation, especially pronounced on high-performance hardware and high-DPI displays. The interaction between macOS's event handling and Emacs' efficient resource management leads to caching of useless resources, culminating in memory leaks. While a complete fix is difficult, the author proposes a potential solution: rewriting macOS-specific code in Swift, leveraging its more efficient memory management and asynchronous support to improve Emacs' performance on macOS.

Read more
(xlii.space)
Development

Blast from the Past: Classic CDE Desktop Environment Added to OpenBSD Ports

2025-07-31

The classic Unix desktop environment, CDE (Common Desktop Environment), is making a comeback! OpenBSD developers have imported CDE 2.5.2 into their ports collection. While not yet directly installable as a package (it needs some fixes and improvements), nostalgic developers can compile it locally and experience the classic Unix desktop. A warning: the code is old and insecure, not recommended as a daily driver, but fun for a trip down memory lane.

Read more
(undeadly.org)
Development Unix Desktop Environment
1 2 … 451 452 453 455 457 458 459 … 596 597