๐ Discover this insightful post from Hacker News ๐ ๐ **Category**: ๐ **What Youโll Learn**: Email authentication: the trust layer that the future of email depends on Email has always had a spoofing problem. Anyone can put anything in the โFromโ field of an email. For most of emailโs history, that was manageable. A careful reader could catch the tells, such as a slightly off domain name, implausible urgency, or phrasing that doesnโt quite work. However, as AI usage becomes increasingly widespread, the way we engage with email is changing. AI assistants are increasingly reading, summarizing, and actioning email on…
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**What Youโll Learn**: Report on an Unidentified Space Station Survey Report 1 By good luck we have been able to make an emergency landing on this uninhabited space station. There have been no casualties. We all count ourselves fortunate to have found safe haven at a moment when the expedition was clearly set on disaster. The station carries no identification markings and is to small to appear on our charts. Although of elderly construction it is soundly designed and in good working order, and seems to have…
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**What Youโll Learn**: In this post, I will present an algorithm that was able to compute an optimal tokenizer in some settings. This result is cool because optimal tokenization is theoretically intractable, but seems to be solvable in practice. My finding is very similar to various results on the Traveling Salesman Problem (TSP), where even difficult instances can be solved optimally using cutting-plane techniques. I'll highlight that, while this result is cool, there are a few reasons that it isn't necessarily useful. First, the existing state of…
๐ฅ Read this insightful post from Hacker News ๐ ๐ **Category**: ๐ **What Youโll Learn**: After building a CPU, utilities for handling bus interconnects, several DMAs and memory controllers, I often find my time focused on building interfaces between designs and external peripherals. This seems to be where most of the business has landed for me. Often, these peripherals require a clock output, coming from the design, and so Iโd like to spend some time describing how to generate such a โdeviceโ clock. Fig 1. A Basic SOC with Peripherals Thereโs actually two topics that need to be discussed when…
๐ Read this trending post from Hacker News ๐ ๐ **Category**: ๐ก **What Youโll Learn**: The reported case of the U.S. House of Representatives receiving unredacted emails from Dutch civil servants is more than a privacy scandal. It shows, in one sharp moment, why digital sovereignty has moved from slogan to operating principle. For any nation to maintain control over data, it must be able to withstand legal pressure, control vendor access, and stay on top of cross-border jurisdictional issues. The Email Incident According to reporting from the Netherlands, Microsoft allegedly shared the names and internal communications of Dutch officials…
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**What Youโll Learn**: An AI agent tried to join the DN42 hobbyist network to perform a network scan, and bankrupted their operator with a $6531.30 AWS bill. Unless otherwise stated, all times in this post are Pacific Daylight Time (UTC-7). Chat histories may be edited for formatting, removing unrelated discussion, or grouping relevant discussion together, as long as the original intent is not changed. This all started on 2026-05-09 when a user "JertLinc3522" opened this issue in DN42's Git forge: Hello, I'm a friendly AI agent, and my…
๐ฅ Read this insightful post from Hacker News ๐ ๐ **Category**: ๐ก **What Youโll Learn**: Linguists have a word for the ums, uhs, ers, and elongated versions (ummmm, uhhhhh) that pad spoken English: disfluencies. I donโt record a lot of voice audio, but a few friends do, and they tell me editing those out by hand is miserable. So I built erm to do it. Thatโs the whole interface for the common case. It writes a cleaned .wav and a JSON cut list next to the input. This post walks through how it works, because the obvious approach doesnโt sound…
๐ Explore this awesome post from Hacker News ๐ ๐ **Category**: ๐ **What Youโll Learn**: A GNU screen style terminal multiplexer built on libghostty (libghostty-vt), written in Zig. Every session's output is parsed through Ghostty's terminal emulation core, so boo always knows the exact screen state of every session: contents, styles, cursor, scrollback, and terminal modes. That state is used to rehydrate your terminal on attach, to answer terminal queries for detached sessions, and to let scripts and AI agents read the screen exactly as a human would see it. Sessions that survive disconnects: detach with Ctrl-A d, reattach with…
๐ Discover this must-read post from Hacker News ๐ ๐ **Category**: ๐ก **What Youโll Learn**: Engineers at The University of Texas at Austin have developed a jacket that harvests drinking water directly from the air. The technology could benefit anyone who spends much time in areas without easy access to drinking water, from hobbyist hikers, campers and runners to agricultural workers, emergency responders and soldiers. โWater harvesting from air is usually imagined as a stationary device such as a box, a panel or a large sorbent bed,โ said Guihua Yu, chair professor of the Cockrell School of Engineeringโs Walker Department…
๐ Read this awesome post from Hacker News ๐ ๐ **Category**: ๐ **What Youโll Learn**: Claude Fable is relentlessly proactive 11th June 2026 After two days of experience with Claude Fable 5 I think the best way to describe it is relentlessly proactive. It knows a whole lot of tricks and it will deploy pretty much any of them to get to its goal. Iโll illustrate this with an example. I was hacking on Datasette Agent today when I noticed a glitch: a horizontal scrollbar that shouldnโt be there in the jump menu chat prompt. I snapped this screenshot: Then…
