GoKawiil - Latest Tech News & Aggregated Headlines

PureVPN IPv6 Leak

news.ycombinator.com Unknown 2025-09-20 23:10:14

In late August 2025, I submitted two security reports to PureVPN under their VDP. Three weeks later, I’ve received no response, so I decided to publish the findings to inform other users. The issues affect both their GUI (v2.10.0) and CLI (v2.0.1) clients on Linux (tested on Ubuntu 24.04.3 LTS, kernel 6.8.0, iptables-nft backend). Here’s what I found. 1. IPv6 Leaks Off-Tunnel After toggling Wi-Fi or resuming from suspend, the PureVPN client fails to restore IPv6 protections: CLI (IKS enabled

Topics: accept input iptables ipv6 purevpn

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Trigger Crossbar

news.ycombinator.com Unknown 2025-09-25 13:08:13

Trigger crossbar 2025-09-14 11:00 If you have a large, well-equipped electronics lab you’re going to have a lot of instrumentation with trigger input and output ports. In my case all three oscilloscopes, the vector signal generator, and even my VNAs have trigger sync capability, and there’s probably more things I’m missing. And that doesn’t even count the ThunderScope or the two Siglent AWGs I have on loan for ThunderScope R&D. Very often, it’s handy to cascade these in order to enable compl

Topics: board fpga input power trigger

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Go for Bash Programmers – Part II: CLI Tools

news.ycombinator.com Unknown 2025-10-02 06:26:15

This is the second part of a series introducing Bash programmers to Go. This part is about basics of writing CLI tools in Go. See the first part for the language building blocks. Our first CLI tool Bash is often used to write small CLI tools and automation. Let's start with an example CLI tool that prints "hello" to terminal. The Bash version is pretty simple: #! /bin/bash echo hello Now, let's implement a Go version. We start by creating a directory where the first version of our program wi

Topics: count function hello input os

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Apple hit with patent lawsuit over ‘Hey Siri’ and virtual keyboard features

9to5mac.com Marcus Mendes 2025-10-09 01:20:08

Once part of Nuance Communications (which powered Siri‘s speech recognition in its early years), Cerence is now a subsidiary that, according to its website, works with bringing “conversational AI to the automotive world and beyond.” Today, Cerence filed a lawsuit against Apple, accusing it of infringing multiple patents. Here are the details. In its complaint, filed with the U.S. District Court for the Western District of Texas, Cerence says that it contacted Apple in 2021 regarding “the poten

Topics: apple cerence input patents word

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Are OpenAI and Anthropic losing money on inference?

news.ycombinator.com Unknown 2025-10-20 23:15:22

I keep hearing what a cash incinerator AI is, especially around inference. While it seems reasonable on the surface, I've often been wary of these kind of claims, so I decided to do some digging. I haven't seen anyone really try to deconstruct the costs in running inference at scale and the economics really interest me. This is really napkin math. I don't have any experience at running frontier models at scale, but I do know a lot about the costs and economics of running very high throughput s

Topics: costs input million output tokens

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Are OpenAI and Anthropic Losing Money on Inference?

news.ycombinator.com Unknown 2025-10-21 19:15:22

I keep hearing what a cash incinerator AI is, especially around inference. While it seems reasonable on the surface, I've often been wary of these kind of claims, so I decided to do some digging. I haven't seen anyone really try to deconstruct the costs in running inference at scale and the economics really interest me. This is really napkin math. I don't have any experience at running frontier models at scale, but I do know a lot about the costs and economics of running very high throughput s

Topics: costs input million output tokens

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A lightweight TypeScript library for assertion-based runtime data validation

news.ycombinator.com Unknown 2025-10-27 08:43:34

Lightweight, zero-dependency library for validating arbitrary runtime data in TypeScript. decode-kit provides assertion-based validation that refines your types in-place — no cloning, no transformations, and minimal runtime overhead. Installation npm install decode-kit Quick Start decode-kit validates your data and narrows its type in-place. Your original values remain unchanged - only their TypeScript types are refined. The validate function runs a runtime check and, on success, asserts the

Topics: input kit number string validate

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Solving the Nostr web clients attack vector

news.ycombinator.com Unknown 2025-11-08 10:36:57

Aug 9 2025 Solving the Nostr web clients attack vector One problem Nostr still has to deal with is the fact that web clients are "owned" by someone, because they rely so much on the domain name they're served from. Everything is fine with, say, https://coracle.social/, until npub1jlrs53pkdfjnts29kveljul2sm0actt6n8dxrrzqcersttvcuv3qdjynqn decides to shut it down or maybe he is threatened to include some malicious code in there, most Coracle users are going to fall for that and Nostr will feel

Topics: coracle nostr npub1jlrs53pkdfjnts29kveljul2sm0actt6n8dxrrzqcersttvcuv3qdjynqn use web

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Angle brackets in a Nix flake world

news.ycombinator.com Unknown 2025-11-12 22:06:25

At DEFCON33, the Nix community had its first-ever presence via nix.vegas and I ended up in fun conversation with tomberek 🙌. “What fun things can we do with < and > with the eventual deprecation of NIX_PATH ? The actual 💡 was from tomberek and this is a demonstration of what that might look like without necessitating any changes to CppNix itself. As a very worthwhile aside, the first time presence of the Nix community at DEFCON was fantastic and I am extra appreciative to numinit and RossComp

Topics: flake inputs lib nix nixpkgs

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A Bytecode VM for Arithmetic: The Parser

news.ycombinator.com Abhinav Sarkar 2025-12-06 22:37:01

In this series of posts, we write a bytecode compiler and a virtual machine for arithmetic in Haskell. We explore the following topics: In this series of posts, we write a bytecode compiler and a virtual machine for arithmetic in Haskell. We explore the following topics: Parsing arithmetic expressions to Abstract Syntax Trees (ASTs). Compiling AST s to bytecode. s to bytecode. Interpreting AST s. s. Efficiently executing bytecode in a virtual machine (VM). Disassembling bytecode and decomp

Topics: bsc expr fails input let

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AMD signals push for discrete NPUs to rival GPUs in AI-powered PCs

techspot.com Cal Jeffrey 2025-12-11 10:17:00

Serving tech enthusiasts for over 25 years.TechSpot means tech analysis and advice you can trust Forward-looking: As AI workloads reshape computing, AMD is exploring a dedicated neural processing unit to complement or replace GPUs in AI PCs. This move reflects growing industry momentum toward specialized accelerators that promise faster performance and greater energy efficiency – key factors as PC makers race to deliver smarter, leaner machines. AMD is exploring whether PCs could benefit from

Topics: ai amd discrete gpus npu

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Resizable structs in Zig

news.ycombinator.com Unknown 2025-12-21 05:43:57

In this post I will make the case for the concept of a “runtime resizable struct” in Zig. I will then design an API by exploiting Zig’s powerful comptime functionality. If you want to skip straight to the implementation, a minimal proof of concept is available as a package on GitHub. Zig has support for many kinds of collection types in its standard library. All of them can broadly be broken down to two primitive backing types for contiguous data storage: [N]T – arrays, when you always know t

Topics: const data field host input

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Resizable Structs in Zig

news.ycombinator.com Unknown 2025-12-21 11:43:57

In this post I will make the case for the concept of a “runtime resizable struct” in Zig. I will then design an API by exploiting Zig’s powerful comptime functionality. If you want to skip straight to the implementation, a minimal proof of concept is available as a package on GitHub. Zig has support for many kinds of collection types in its standard library. All of them can broadly be broken down to two primitive backing types for contiguous data storage: [N]T – arrays, when you always know t

Topics: const data field host input

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Best AV Receiver for 2025

cnet.com See Full Bio 2026-01-12 03:00:00

AV receivers are notoriously complex, with reams of features and confusing technical specifications. (For example, what's 4K/120Hz anyway?) Yet, what are the things that really matter when buying a new model? I'm going to sum up the most important ones right here. HDMI inputs With most TVs and set-top boxes supporting HDMI, you should buy a receiver that has as many of these HDMI input ports and outputs as possible. Front-mounted HDMI ports are kind of like a human appendix -- unneeded, becaus

Topics: hdmi inputs receivers streaming wireless

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Context Rot: How increasing input tokens impacts LLM performance

news.ycombinator.com Unknown 2026-01-15 17:25:15

Recent developments in LLMs show a trend toward longer context windows, with the input token count of the latest models reaching the millions. Because these models achieve near-perfect scores on widely adopted benchmarks like Needle in a Haystack (NIAH) [1], it’s often assumed that their performance is uniform across long-context tasks. However, NIAH is fundamentally a simple retrieval task, in which a known sentence (the “needle”) is placed in a long document of unrelated text (the “haystack”)

Topics: haystack input model models needle

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Strategies for Fast Lexers

news.ycombinator.com Unknown 2026-01-16 23:42:54

In this blog post I’ll explain strategies I used to make the purple garden lexer really fast. purple-garden is an s-expr based language I am currently developing for myself. Its my attempt at building a language I like, with a battery included approach, while designing it with performance in mind. This doesn’t mean all approaches are feasible for your use case, architecture and design. I tried to bring receipts for my performance claims, so watch out for these blocks at the end of chapters: I

Topics: cc input pos str string

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C3 solved memory lifetimes with scopes

news.ycombinator.com Unknown 2026-01-15 03:27:42

2025-07-11 Modern languages offer a variety of techniques to help with dynamic memory management, each one a different tradeoff in terms of performance, control and complexity. In this post we’ll look at an old idea, memory allocation regions or arenas, implemented via the C3 Temp allocator, which is the new default for C3. The Temp allocator combines the ease of use of garbage collection with C3’s unique features to give a simple and (semi)-automated solution within a manual memory management

Topics: allocator input int memory temp

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Optimizing a Math Expression Parser in Rust

news.ycombinator.com Ricardo Pallás 2026-01-23 04:27:02

Optimizing a Math Expression Parser in Rust Optimizing a Math Expression Parser in Rust Table of contents In a previous post I explored how to optimize file parsing for max speed. This time, we’ll look at a different, self-contained problem: writing a math expression parser in Rust, and making it as fast and memory-efficient as possible. Let’s say we want to parse simple math expressions with addition, subtraction, and parentheses. For example: 4 + 5 + 2 - 1 => 10 (4 + 5) - (2 + 1) => 6 (1

Topics: depth input let token tokens

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QRS: Epsilon Wrangling

news.ycombinator.com Tim Bray 2026-01-23 18:45:19

I haven’t shipped any new features for Quamina in many months, partly due to a flow of real-life distractions, but also I’m up against tough performance problems in implementing Regular Expressions at massive scale. I’m still looking for a breakthrough, but have learned things about building and executing finite automata that I think are worth sharing. This piece has to do with epsilons; anyone who has studied finite automata will know about them already, but I’ll offer background for those peop

Topics: closure input nfa state symbol

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Google is spicing up Gemini’s home screen with a visual revamp (APK teardown)

androidauthority.com Unknown 2026-01-25 04:36:55

Ryan Haines / Android Authority TL;DR Google is working on a new tweak to the Gemini home screen. The change expands the input box and adds a shadow. Corners now only appear on top of the input box. A few weeks ago, we told you about a change that could be coming to the Gemini home screen. That tweak would make the home screen a little more like ChatGPT’s by adding suggestion chips. But it looks like that may not be the only alteration in store for the page. Authority Insights story on Andr

Topics: authority box google input screen

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Microsoft’s Copilot Plus features might arrive on desktop PCs later this year

theverge.com Tom Warren 2026-01-28 17:48:19

is a senior editor and author of Notepad , who has been covering all things Microsoft, PC, and tech for over 20 years. Microsoft’s latest Windows AI features arrived first on new Copilot Plus PCs last year, but they were limited to a special range of laptops. That looks set to change thanks to Intel refreshing its existing Arrow Lake desktop CPUs later this year, that might just deliver Copilot Plus PC features in desktop PC form factors for the first time. Intel’s latest Core Ultra desktop CP

Topics: copilot intel lake npu plus

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Parallelizing SHA256 Calculation on FPGA

news.ycombinator.com Unknown 2026-02-04 20:25:30

A few weeks ago, I wrote an article where I developed a hash calculator on an FPGA. Specifically, I implemented an SHA-256 calculator. This module computes the hash of a string (up to 25 bytes) in 68 clock cycles. The design leverages the parallelism of FPGAs to compute the W matrix and the recursive rounds concurrently. However, it produces only one hash every 68 clock cycles, leaving most of the FPGA underutilized during that time. In this article we are going to elevate the performance of t

Topics: 31 hash input self wire

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Show HN: VSCan - Detect Malicious VSCode Extensions

news.ycombinator.com Unknown 2026-02-22 09:32:54

file_upload 1. Input Extension Provide the VSCode Marketplace name or ID of the extension you want to analyze.

Topics: analyze extension file_upload id input

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Latest Tech News

PureVPN IPv6 Leak

Trigger Crossbar

Go for Bash Programmers – Part II: CLI Tools

Apple hit with patent lawsuit over ‘Hey Siri’ and virtual keyboard features

Are OpenAI and Anthropic losing money on inference?

Are OpenAI and Anthropic Losing Money on Inference?

A lightweight TypeScript library for assertion-based runtime data validation

Solving the Nostr web clients attack vector

Angle brackets in a Nix flake world

A Bytecode VM for Arithmetic: The Parser

AMD signals push for discrete NPUs to rival GPUs in AI-powered PCs

Resizable structs in Zig

Resizable Structs in Zig

Best AV Receiver for 2025

Context Rot: How increasing input tokens impacts LLM performance

Strategies for Fast Lexers

C3 solved memory lifetimes with scopes

Optimizing a Math Expression Parser in Rust

QRS: Epsilon Wrangling

Google is spicing up Gemini’s home screen with a visual revamp (APK teardown)

Microsoft’s Copilot Plus features might arrive on desktop PCs later this year

Parallelizing SHA256 Calculation on FPGA

Show HN: VSCan - Detect Malicious VSCode Extensions

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