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Anime Catgirls and the Linux Kernel: A Cost Analysis of an Anti-Crawler Mechanism

2025-08-21

Recently, more websites are using Anubis, an anti-crawler system that uses a mining-like process to verify visitor identity, requiring users to perform SHA-256 operations to gain access. The author questions the effectiveness of Anubis because it's trivial for AI crawlers with powerful computing capabilities but inconvenient for ordinary users. Through calculations, the author finds that even with tens of thousands of websites deploying Anubis, the cost of cracking its verification mechanism is virtually zero. The author finally provides a simple C program to bypass Anubis's restrictions and points out a vulnerability in the Anubis system.

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(lock.cmpxchg8b.com)
Tech

Minimalist TPU Design: A Beginner's Guide to Chip Accelerator Development

2025-08-19
Minimalist TPU Design: A Beginner's Guide to Chip Accelerator Development

This article details a minimalist Tensor Processing Unit (TPU) design inspired by Google's TPU V1 and V2. The TPU features a 2x2 grid of processing elements, pipelining multiply-accumulate operations, bias addition, Leaky ReLU activation, and MSE loss calculations. Its 94-bit instruction set controls data flow horizontally and vertically across the processing element grid, supporting preprocessing and weight matrix transposition. The article thoroughly explains the instruction set, hardware architecture, and the process of adding modules and running tests, aiming to introduce readers to chip accelerator design.

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(github.com)
Hardware hardware accelerator

Go's Native FIPS 140-3 Crypto Module: A Secure and Simple Solution

2025-07-16

Go 1.24 and later now natively supports FIPS 140-3 compliance through a new cryptographic module developed in collaboration with Geomys. This module, validated by CAVP certificate A6650 and undergoing CMVP review, eliminates previous friction points for Go users in regulated environments. Offering a seamless developer experience, it boasts uncompromising security, using optimized ECDSA and a NIST DRBG based on AES-256-CTR. It supports a wide range of platforms and algorithms, surpassing the capabilities and security of its predecessor, Go+BoringCrypto. This native module provides the easiest and most secure path to FIPS 140-3 compliance for Go developers.

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(go.dev)
Development Cryptographic Module

Open-Source WebGPU Ray Tracer: Real-time Rendering from glTF Scenes

2024-12-26
Open-Source WebGPU Ray Tracer: Real-time Rendering from glTF Scenes

The open-source project webgpu-raytracer is a software ray tracing engine built using the WebGPU API. It supports glTF scene files and renders materials with albedo, normal, and material maps. The engine utilizes BVH for accelerated ray-scene intersections and employs multiple importance sampling for efficiency. Currently, it supports environment maps and allows camera control via keyboard and mouse, but refraction is not yet supported.

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(github.com)
Development Ray Tracing

Meta AI Now Uses Your Data for Personalized Responses: Privacy Concerns?

2025-01-27
Meta AI Now Uses Your Data for Personalized Responses: Privacy Concerns?

Meta AI has received an upgrade, leveraging Facebook and Instagram data to personalize responses. The AI can now remember past conversation details and tailor recommendations based on user preferences, such as dietary restrictions. For example, it could create personalized bedtime stories based on Facebook profile information and Instagram browsing history. While Meta claims users can delete memories, the update raises privacy concerns, especially given the generally low level of trust in Meta's data handling.

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(techcrunch.com)
AI

Reverse Engineering Stunts: SuperSight Mod Development Log (Part I)

2025-08-17

Alberto Marnetto details his journey creating SuperSight, a graphical enhancement mod for the classic racing game Stunts. The article chronicles his reverse engineering process, leveraging the community-driven Restunts project (containing partially disassembled code and C-language ports) to understand the game's rendering engine. Initial attempts to modify graphics settings via the in-game menu proved difficult due to the game's lack of option saving. By analyzing Restunts' code, he pinpointed the variable controlling graphical detail. He then implemented simple enhancements like altering the field of view, encountering and documenting minor glitches. This successful proof of concept paves the way for further improvements detailed in future parts.

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(marnetto.net)
Game

VGGT: Lightning-Fast 3D Scene Reconstruction from Images

2025-03-25
VGGT: Lightning-Fast 3D Scene Reconstruction from Images

Facebook Research introduces VGGT (Visual Geometry Grounded Transformer), a feed-forward neural network capable of inferring all key 3D attributes of a scene—extrinsic and intrinsic camera parameters, point maps, depth maps, and 3D point tracks—from one, a few, or hundreds of views in mere seconds. This user-friendly model, leveraging the power of Transformers, offers an interactive 3D visualization tool. Surprisingly, VGGT demonstrates impressive single-view reconstruction capabilities, achieving competitive results compared to state-of-the-art monocular methods, despite not being explicitly trained for this task.

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(github.com)
AI

Koniku: Building the Future of Computing with Living Neurons

2025-02-24
Koniku: Building the Future of Computing with Living Neurons

Koniku is attempting to build computers unlike any that have ever existed, using living neurons. Founder Oshiorenoya Agabi and his team in Berkeley, California, are developing a neuron-silicon hybrid chip, called the Koniku Kore, initially for chemical sensing, with future applications spanning drug development, agriculture, and neurological disease treatment. The company has secured contracts with defense and consumer product companies and plans to release a developer chip. While challenges remain, such as neuron cultivation and signal interpretation, Koniku's innovation lies in its fusion of biology and electronics, pushing towards 'wetware' AI and challenging the limitations of traditional silicon-based computing.

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(proto.life)
AI biological computing neurons

Product Managers in the Age of AI: New Tools, Same Core Principles

2024-12-22
Product Managers in the Age of AI: New Tools, Same Core Principles

Despite the trendy term "AI Product Manager," AI hasn't fundamentally changed product management's core: understanding user needs, creating solutions, and defining tasks. AI provides powerful new tools like Large Language Models (LLMs), but PMs still leverage these tools, not build them. The article explains basic LLM concepts (tokens, context windows, prompts) and advises PMs to learn effective prompting, collaborate closely with engineers, and focus on AI's practical value for the product, avoiding trendy additions. In short, AI is a tool, not a replacement; PMs must embrace AI and enhance their skills to thrive in this era.

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(productme.org)
Development Product Management

“Bread and Circuses”: Reframing the Narrative of Roman Decline

2024-12-20
“Bread and Circuses”: Reframing the Narrative of Roman Decline

This article delves into the origins and meaning of the proverb “bread and circuses.” Tracing it back to Juvenal's satire, the author argues it's not a positive assessment of the Roman populace but a critique of their abdication of political responsibility in favor of basic needs and entertainment. The author challenges the common notion that “bread and circuses” caused Rome's downfall, attributing the decline to prolonged civil wars and instability, with the populace prioritizing peace above all else. Ultimately, the article reveals the true meaning of “bread and circuses”: a lament for the loss of political liberty and the constrained dreams of the Roman people.

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(acoup.blog)
Misc Roman history bread and circuses political decline

Dhruv Vidyut: Bolt-On E-Conversion Kit for Bikes

2025-01-23

Dhruv Vidyut offers a revolutionary electric conversion kit (DVECK) for bicycles and tricycles. Easily retrofitted, DVECK transforms any bike into an e-bike, providing a comfortable, efficient, and eco-friendly ride on any terrain. The company offers various options and welcomes business inquiries, including bulk purchases, dealership opportunities, and overseas imports.

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(dhruvvidyut.co.in)
Hardware e-bike conversion kit electric bicycle

MRubyD: A C#-based mruby VM for Seamless Game Engine Integration

2025-03-24
MRubyD: A C#-based mruby VM for Seamless Game Engine Integration

MRubyD is a new mruby virtual machine implemented in pure C#, designed for seamless integration with C#-based game engines. Leveraging modern C# features, it boasts high performance and extensibility, prioritizing Ruby API compatibility. Currently in preview, some features like built-in types and methods, as well as private/protected visibility, are under development. Install via `dotnet add package MRubyD` and explore its capabilities through the provided examples. It requires the native mruby compiler for compiling .rb source code into .mrb bytecode.

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(github.com)
Development

Async Function Calls on Socket.io: Introducing socket-call

2025-06-16
Async Function Calls on Socket.io: Introducing socket-call

socket-call is a small library built on top of Socket.io that lets you call events like any regular async TypeScript function. It simplifies Socket.io usage, offering a cleaner and more intuitive programming experience. Code examples demonstrate server-side and client-side implementation, showcasing login functionality and server-to-client message sending.

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(github.com)
Development

@celine/bibhtml v3.0.3: A Web Components-Based Referencing System

2024-12-21
@celine/bibhtml v3.0.3: A Web Components-Based Referencing System

@celine/bibhtml, a Web Components-based referencing system for HTML documents, has released version 3.0.3. It aims to provide a user experience similar to LaTeX/BibTeX referencing, using Citation.js under the hood and gracefully degrading when citations and references are malformed or JavaScript is disabled. Supporting BibTeX, unstructured text, DOI, and Wikidata formats, it offers three custom elements: ``, ``, and ``, simplifying reference management in HTML.

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(maxbo.me)
Development Reference Management

Python Protocols: Static Duck Typing and the Evolution of Inheritance

2025-02-02
Python Protocols: Static Duck Typing and the Evolution of Inheritance

Python's inheritance mechanism has always been interesting. Traditionally, Python uses type-based inheritance, similar to Java. However, the flexibility of duck typing (implemented through magic methods) is limited. PEP 544 introduces Protocols, allowing the definition of structural subtyping, also known as static duck typing. By inheriting from the Protocol class, developers can declare a set of methods; any class implementing these methods will be considered an instance of that protocol. This solves the scalability issues of traditional duck typing, resulting in cleaner, more maintainable code.

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(blog.frankel.ch)
Development Duck Typing

Critical Vulnerabilities Found in Secrets Management Vaults

2025-08-07
Critical Vulnerabilities Found in Secrets Management Vaults

Researchers discovered subtle logic flaws in HashiCorp Vault and CyberArk Conjur, allowing attackers to bypass authentication, evade policy checks, and impersonate accounts. These vaults, storing credentials governing access to systems and data, are the backbone of digital infrastructure. Compromise means complete infrastructure loss. The vulnerabilities, responsibly disclosed and now patched, highlight the critical need for robust secrets management and access control.

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(www.csoonline.com)
Tech secrets management

10x Speedup: Switching from pip to uv in Dockerized Flask/Django Apps

2025-06-24
10x Speedup: Switching from pip to uv in Dockerized Flask/Django Apps

This post details a significant performance improvement (up to 10x) achieved by switching from pip to uv for dependency management in Dockerized Flask and Django applications. The author explains how to replace requirements.txt with pyproject.toml, modify the Dockerfile to utilize uv, and leverages uv commands for efficient dependency handling. The process avoids virtual environments and runs as a non-root user, contributing to faster build times and improved efficiency. A video tutorial and example project are also provided.

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(nickjanetakis.com)
Development

W3C HTML Working Group: Driving HTML Standard Evolution

2024-12-26
W3C HTML Working Group: Driving HTML Standard Evolution

The W3C HTML Working Group is dedicated to bringing WHATWG's HTML and DOM review drafts to W3C Recommendations. This group comprises global experts collaboratively ensuring the continued evolution and improvement of HTML standards to meet the ever-changing needs of the web. The group features a defined mission, participation process, and patent policy, and regularly publishes updates and event information.

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(www.w3.org)
Development HTML standard Web standards

AI-Generated Bug Reports Flood Open Source Projects

2024-12-24
AI-Generated Bug Reports Flood Open Source Projects

Open source maintainers are drowning in low-quality bug reports generated by AI. These reports often waste valuable time and resources, as AI systems currently lack the ability to understand code and frequently produce false or even malicious reports. Seth Larson of the Python Software Foundation and Daniel Stenberg of the Curl project have both highlighted the issue, emphasizing the strain on volunteer maintainers and the risk of overlooking genuine vulnerabilities. The problem necessitates a community-wide effort to improve funding, enhance efficiency, and develop better filtering mechanisms to identify and handle AI-generated junk reports.

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(www.theregister.com)
Development Bug Reports

Pure JS CSV to Searchable HTML Table

2025-05-22
Pure JS CSV to Searchable HTML Table

Tired of wrestling with CSV data? This pure JavaScript project transforms your CSV files into beautiful, searchable, and filterable HTML tables. With minimal code, visualize your data, customize formatting, enable downloads, and embed the table seamlessly. Check out the demo and simplify your data handling today!

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(github.com)
Development

A Transputer Emulator in JavaScript: A 90s OS Reborn in Your Browser

2025-04-04
A Transputer Emulator in JavaScript: A 90s OS Reborn in Your Browser

A developer has ported their C-based Transputer emulator to JavaScript. Surprisingly fast, this emulator comes pre-loaded with a full-blown operating system from Spring 1996, including a C compiler, assembler, 3D modeler, and ray tracer. Users can experience this retro OS directly in their browser, running commands and even attempting to self-compile the C compiler! This showcases the advancements in JavaScript JIT compilation and the developer's passion for retro technology.

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(nanochess.org)
Development Retro OS

The Royal Navy's Century-Long Battle Against Lightning Rods

2025-03-07
The Royal Navy's Century-Long Battle Against Lightning Rods

In the mid-18th century, Benjamin Franklin elucidated the nature of lightning and advocated for lightning rods. Yet, a century later, the British Navy remained unconvinced. Dr. William Snow Harris invented a shipborne lightning rod system and demonstrated its principles through an ingenious booklet with interactive, gold-leafed illustrations. Despite his decades-long efforts, backed by data, experiments, and key lightning incidents, the Navy resisted. Only after political maneuvering was Harris finally successful in 1842, getting his lightning rods installed on all Royal Navy vessels. His victory was short-lived, however; the advent of ironclad ships rendered them obsolete. This story highlights the enduring struggle between scientific discovery and political decision-making.

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(spectrum.ieee.org)
Tech lightning rod Royal Navy

Topological Sort Algorithm Variant: Efficiently Handling Dependencies

2025-04-03
Topological Sort Algorithm Variant: Efficiently Handling Dependencies

This article presents an improved topological sorting algorithm based on Kahn's algorithm, but it treats nodes as sets instead of individual nodes. The algorithm iteratively finds the root sets of the graph, removes them, and repeats until the graph is empty. The order of the removed root sets forms a topological order, and nodes within the same root set are independent and can be processed in parallel. The algorithm can also detect cycles and return a partial topological ordering instead of completely aborting.

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(github.com)
Development topological sort graph algorithm

Rust: Investigating a Mysterious OOM

2025-01-19
Rust: Investigating a Mysterious OOM

Qovery's engine-gateway, a Rust service, experienced unexpected out-of-memory (OOM) crashes. Monitoring showed stable memory usage before abrupt restarts. The culprit? The anyhow library, when backtraces are enabled, captures a backtrace for every error. Symbol resolution, only triggered when printing errors in debug mode (`{:?}`), caused massive memory consumption. Setting environment variables `RUST_BACKTRACE=1` and `RUST_LIB_BACKTRACE=0` to enable backtraces only on panic solved the issue. This highlights how monitoring can be deceptive and the importance of thorough library documentation review.

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(www.qovery.com)
Development OOM

Is Creating a Perfectly Spherical Prince Rupert's Drop Possible?

2024-12-14
Is Creating a Perfectly Spherical Prince Rupert's Drop Possible?

An engineering question explores the possibility of creating a perfectly spherical Prince Rupert's drop. Prince Rupert's drops are glass objects formed by dripping molten glass into cold water, their unique internal stresses making them incredibly tough except at the tail. The article discusses how, theoretically, in a zero-gravity environment by controlling the cooling rate and removing the effects of gravity, a spherical Prince Rupert's drop could be made, but significant practical challenges remain.

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(engineering.stackexchange.com)
Tech Prince Rupert's Drop Glass Material Science

DHS OIG Audits TSA's Airport Facial Recognition

2025-02-04
DHS OIG Audits TSA's Airport Facial Recognition

Following concerns from lawmakers and privacy advocates, the Department of Homeland Security's Inspector General (DHS OIG) has launched an audit of the Transportation Security Administration's (TSA) use of facial recognition technology at US airports. The audit will examine the technology's effectiveness in enhancing security while protecting passenger privacy. Despite TSA's claim of 99.7% accuracy, thousands of misidentifications could still occur daily with widespread deployment. This audit comes in response to senators' concerns about TSA's planned expansion of facial recognition, following the failure of a bill to halt it.

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(www.theregister.com)
Tech

Kagi Family Plan: A Safer Search Experience for Kids

2025-03-31
Kagi Family Plan: A Safer Search Experience for Kids

Kagi's new Family Plan prioritizes a safe and private search experience for families. It features a kid-friendly interface, parental controls (including whitelisting and blacklisting websites), and AI-powered quick answers with safety warnings and content filtering. Kagi also uses fun avatars, like a poop emoji, to teach kids about online identity and privacy. The plan's unique approach emphasizes child online safety and promotes responsible tech use through engaging, lighthearted methods.

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(help.kagi.com)
Tech family search engine
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