Hackernoon

The whole point of a hardware wallet is that it’s unreachable. The private keys never touch the internet. The device never connects to anything except the moment you plug it in to sign a transaction. An attacker who can’t physically hold the device in their hands is, in theory, locked out forever. That’s the pitch. … Read more

I have sat in the room where a vendor demo got a standing reaction, then watched the same product fail a single edge case in week two of the pilot. The demo was a chatbot with three canned branches. The deck called it an autonomous agent. This happens because “AI-powered” has no agreed definition, so … Read more

Outer Solar System Entering the area of gas and ice giants What follows is part 3 of my ongoing observations and ideas inspired by “Project Hail Mary”. You can find part 1 and part 2 linked here. Once again, I will warn those wary of spoilers to maybe stop reading, NOT click those links, bookmark … Read more

Let’s learn about Kafka via these 91 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. Kafka is a distributed streaming platform enabling applications to publish, subscribe to, store, and process stream records in real-time. It matters … Read more

If you run a mailing list or any kind of forwarder and some of your subscribers quietly stopped receiving mail, DMARC is probably why. This is one of those problems baked into how the standards interact, not a bug you can configure away, and ARC is the patch the industry reached for. It helps less … Read more

The Fogg Behavior Model Why This Matters to You Imagine you’ve spent weeks designing a feature. You launch it — and crickets. Nobody uses it. Sound familiar? The problem might not be bad design. It might be that your users simply weren’t set up to take the action you wanted. This brings us to the … Read more

Everyone wants to talk about vector search and AI-powered everything when Oracle 23ai comes up. Fair enough, that’s the headline feature. But after spending real hours in SQL*Plus and SQLcl against a 23ai instance, the stuff that’s actually changed my day-to-day isn’t the AI layer; it’s a batch of small SQL fixes that Oracle should … Read more

Let’s learn about K8s via these 121 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. K8s, or Kubernetes, is an open-source system for automating deployment, scaling, and management of containerized applications. It matters by providing a … Read more

Meta published “The Future is for Everyone,” and nowhere in it does Zuckerberg name a condition under which Meta would slow down. Once you notice that, the rest of the memo reads differently. It is a policy document as much as a product vision, and it takes direct positions on jobs, open source, government access, … Read more

How are you, hacker? 🪐Want to know what’s trending right now?: The Techbeat by HackerNoon has got you covered with fresh content from our trending stories of the day! Set email preference here. ## Can Machines Learn Taste? By @laumski [ 8 Min read ] Silicon Valley wants to teach AI good taste. But machines … Read more

Let’s learn about Json via these 93 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for … Read more

Years ago, I came across an infographic called Businesses Have Messy Data. It visualized something every growing company eventually discovers: data becomes chaos. Different departments use different tools. Information gets duplicated. Contacts live in spreadsheets, CRMs, inboxes, Slack channels, and random databases nobody remembers creating. Looking at that infographic made me think about emails. Not … Read more

Slack has given engineering teams many gifts: custom stickers, searchable chaos, and the ability to pretend a thread is not a meeting. Teams exists too, of course, but this article is about Slack, so we can keep morale high. GitHub integrations are one of the best things to happen to Slack since custom stickers. Used … Read more

The great decision to self-host has landed. Model weights are free, your data is your own, and no more per-token bills addressed to the accounting dept. Then you open a list of serving options, and there are more than a dozen of them. Not a single one gives you a clear answer to aid with … Read more

If you’ve been following this blog, you’ll know that I’ve been working on my Zmanim-WP plugin for WordPress for a while now. This blog series is designed to help you dig deeper into the plugin and understand what it does, how it works, and whether it’s right for your needs. In the first 5 parts of this series, I … Read more

There have been a total of 9 live-action Spider-Man movies. We’ve seen him go up against iconic villains such as Green Goblin, Mysterio, Vulture, and many more. However, Spider-Man’s rogue’s gallery is so vast that there are a ton of villains who haven’t even been referenced yet. Here are 5 Spider-Man villains who haven’t been … Read more

Let’s learn about Js via these 118 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. “Not a real programming language” since 1995. 1. A Beginner’s Guide to BFS and DFS in JavaScript Learn BFS and DFS, … Read more

A landmark study of 1,689 Copilot-generated programs found 40% contained vulnerabilities. Every one of those PRs almost certainly had a human’s name on the approval. That’s the part of “human in the loop” nobody likes to examine too closely. A name on a PR isn’t proof that judgment happened. It’s proof someone clicked approve. I’ve … Read more

Let’s learn about Javascript via these 500 free blog posts. They are ordered by HackerNoon reader engagement data. Visit the Learn Repo or LearnRepo.com to find the most read blog posts about any technology. “Not a real programming language” since 1995. 1. How it feels to learn JavaScript in 2016 <em>No </em><a href=”https://hackernoon.com/tagged/javascript” target=”_blank”><em>JavaScript</em></a><em> frameworks … Read more

I built a RAG tool over my own writing. Here’s what I learned. A note: I built this with Claude Code doing the implementation, directed by me. Worth being explicit about that, since it’s the more honest version of what “I built this” means here. The architecture, the schema design, the chunking and retrieval decisions, … Read more

Prefill/decode disaggregation has the elegance of a clean architecture diagram. Prompt processing is compute-heavy. Token generation is memory-bandwidth-heavy. Put them on separate GPU pools, scale each phase independently, and stop them from interfering with each other. That logic is sound. Then a burst arrives. Prefill queues grow. Decode GPUs have spare compute but cannot begin … Read more

How are you, hacker? 🪐 What’s happening in tech today, August 14, 2026? The HackerNoon Newsletter brings the HackerNoon homepage straight to your inbox. On this day, Atanasoff Finishes Paper Describing the Atanasoff Berry Computer in 1940, Lunar Obitar 1 began its orbit around the Moon in 1966, Pakistan Independence Day in 1947, and we … Read more

Anthropic started watermarking Claude’s output this week. The mark is invisible; it rides along when you copy and paste, and it answers one question: was a model involved? The complaints came fast, and not from the people flooding the internet with generated slop. They came from writers. Peter Harrell, a lawyer at Georgetown, worked out … Read more

Bitcoin was published as a design for peer to peer electronic cash. Seventeen years later the technical precondition for that finally exists. The average fee on the network was thirty six cents in early August 2026, the cheapest block space has been in years, and the congestion spikes that once made a small purchase absurd … Read more

Hey Hackers! Welcome to HackerNoon Projects of the Week, where we spotlight standout projects from the Proof of Usefulness Hackathon, HackerNoon’s competition designed to measure what actually matters: real utility over hype. This week, we’re pumped to talk about 3 exciting projects that have proven their usefulness: Atlarix, Scribe, and Emisary. The Proof of Usefulness Hackathon … Read more

We can change our paywall in five minutes. New price, different offer, fresh A/B test — no release, no App Store review, no waiting for users to update. For a product where the subscription is the revenue, that speed isn’t a convenience. It’s a superpower. And it’s cheap to get: the paywall lives on the … Read more

How are you, hacker? 🪐Want to know what’s trending right now?: The Techbeat by HackerNoon has got you covered with fresh content from our trending stories of the day! Set email preference here. ## Navigating Claude Code: The Full Workflow By @efimovov_5guqm5 [ 9 Min read ] The nine layers of Claude Code only pay … Read more

Introduction: The Hidden Foundation of Software Beneath the surface of every well-designed software system lies a concept so fundamental, yet so often overlooked, that it shapes the very architecture of code: Abstract Data Types (ADTs). This isn’t just another technical term to memorize—it’s the bedrock that determines whether a system remains modular, scalable, and maintainable … Read more

AI agents are being used more in high-pressure situations such as managing email, running code, interacting with financial APIs, and supervising multi-agent pipelines. However, the current taxonomy of adversarial attacks was mostly proposed for classifiers and generative models alone and fails to adequately describe the testbed of an agent with persistent state, multiple tools, and … Read more