Hackaday Podcast Episode 362: Compression Molding, IPv4x, And Wired Headphones

March 20, 2026 by Jenny List 4 Comments

As the sun goes down on a glorious spring evening on the western edge of Europe, Elliot Williams is joined by Jenny List for a look at the week in all things Hackaday.

First up: Hackaday Europe tickets are on sale! Bad luck folks, the early bird tickets disappeared in an instant, but regular ones are still available for now. We’re really looking forward to making our way to Lecco for a weekend of hacks, and it would be great to see you there too.

Then we have a new feature for the podcast, the Hackaday Mailbag. This week’s contribution comes from [Kenny], a longtime friend of Hackaday and probably our most regular conference attendee.

To the hacks, and we have some good ones. An air hockey robot might not seem like a challenge, but the engineering which went into [BasementBuilds’] one proves it’s not a job for the faint hearted. Then we look at compression molding of recycled plastic using 3D-printed molds, something that seems surprisingly accessible and we’d like to try, too. We’ve got a new DOS, a 3D-printed zipper repair, the IPv4 replacement we didn’t get, and the mind-bending logic of ternary computing. It’s one of those weeks where the quick hacks could all deserve their own in-depth look, but perhaps the stand-outs are and Arduino style compiler that includes the source code compressed within the binary, and a beautifully-done revival of a 1980s brick cellphone as a modern 5G unit.

Finally in the longer reads we’ve got an examination of wired versus Bluetooth headphones — we’re both in the wired camp — and a look back at the age of free dialup. As is so often the case, the experience there differed between Brits and Americans. Anyway, enjoy the episode, and we have another week to look forward to.

Download your own personal copy of the Podcast in glorious 192 kB MP3.

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This Week In Security: Linux Flaws, Python Ownage, And A Botnet Shutdown

March 20, 2026 by Mike Kershaw 8 Comments

The ides of security March are upon us — Qualys reports the discovery by their threat research unit of vulnerabilities in the Linux AppArmor system used by SUSE, Debian, Ubuntu, and Kubernetes as an additional security mechanism and application firewall.

AppArmor was added to Linux in 2010, and the vulnerabilities Qualys discovered have been present since 2017, and allow unprivileged (non-root) local users to elevate privileges by executing arbitrary code in the kernel, gaining root access, or perform a denial-of-service attack across the entire system by replacing all AppArmor behavior with “deny all” rules.

All Linux kernels since Linux 4.11 are vulnerable. If your Linux distribution enables AppArmor, and quite a few do, you’ll want to be updating as soon as fixes are available from your distribution maintainers. On systems with untrusted users, such as shared environments, VPS server environments, and the like, this is even more critical and urgent. Even on single-user systems, vulnerabilities like these allow other exploits, like the Python attack below, mechanisms to elevate their access and persistence.

At the time of writing, the full details of the AppArmor vulnerability are limited until the Linux Kernel team releases a stable version with the fixes for distribution maintainers. Qualys has published the technical write-up with the currently public information.

Python Projects Compromised

StepSecurity reports on a new campaign to infect Python projects on GitHub with a complex malware that, once deployed, appears to be yet another crypto and login stealer.

The attacker first gains access to the GitHub credentials via another info stealing worm – the Glassworm stealer infects VSCode extensions with over 35,000 downloads of infected extensions in October of 2025. Glassworm harvests NPM, GitHub, and OpenVSX credentials and sends them to a remote command and control (C2) server. It also harvests a wide range of crypto currency wallet extensions to steal crypto directly. Continue reading “This Week In Security: Linux Flaws, Python Ownage, And A Botnet Shutdown” →

Illustrated Kristina with an IBM Model M keyboard floating between her hands.

Keebin’ With Kristina: The One With The Ultra-Thin Split

March 19, 2026 by Kristina Panos 2 Comments

But sir, it is wafer-thin. That’s how they get you! Just when you couldn’t possibly justify building another keyboard, let alone owning one, along comes the Kambala by [aroum2].

A wafer-thin keyboard in triple black. — Image by [aroum2] via reddit

Now, ‘Kambala’ means a few things, but here it refers to fish, as evidenced by logo and matching themed PCB key chain shown in the gallery.

This catch is so flat because of the switches: PG1316S, and 42 of them. These are better known to some as Kailh butterfly switches, and are meant for laptops. But, this is Hackaday.

No matter what you call them, those switches are controlled by a nice!nano V2-compatible controller, which allows for ZMK firmware support. There’s a 110 mAh battery and four status LEDs, and best of all, the charging indicator is in the fish’s eyes.

[aroum2] might share the files later. Here’s hoping!

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FLOSS Weekly Episode 866: BreezyBox And Embedded Compilers

March 18, 2026 by Jonathan Bennett No comments

This week Jonathan chats with Valentyn Danylchuk about BreezyBox — an interactive shell and toolkit that provides various tools and a compiler on an ESP32 microcontroller. What was the inspiration for this impressive project, and what direction is it heading? Watch to find out!

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Hackaday Europe Tickets On Sale Now, CFP Extended

March 18, 2026 by Elliot Williams 8 Comments

Hackaday Europe is approaching, and we’re putting tickets on sale now. “But wait, you haven’t selected the talks yet!” we hear you saying. Indeed! And that’s why we discount the first round of entries for our True Believers™ – the hard core who know that it’s going to be a fantastic event and turn up regardless. So if you want to come to Hackaday Europe on the cheap, go snap up your ticket before they’re gone.

Call for Participation Extended

Of course, giving a talk is always the best way to attend a hacker gathering like this. And we know that we said that today was the deadline for talk submissions. But we also know that many of you have advanced degrees in procrastineering, so we’re giving you a week’s extension.

Selected speakers get in free, and we’ll reserve you an early-bird ticket for putting together a legit talk proposal either way. So if you’re a first-time presenter or a wizened pro, and you have something that you’d like to say to an audience of like-minded hackers, we’d all like to hear from you. We won’t extend the deadline twice, though, so get your proposal in before March 25.

(A few people have reached out to us, wanting to avoid the Google login that the above form requires. If you’re in the same camp, write to us directly and let us know!)

Hackaday Europe

In case you don’t know, Hackaday Europe started out as a bi-annual event that we first held a decade ago in Belgrade. It has been such a success that we’re now doing it every year, and leap-frogging around Europe to spread the love. The last ~~two~~ three events have been in Berlin, and this is our first time in Lecco, Italy. This year, it runs the weekend of May 16th and 17th, with a pre-event on the evening of the 15th, to be announced.

What stays the same? We have a fantastic crowd who bring their passion projects with them, a fun badge to hack on, and of course food, drink, music, and merriment all along. Oh, and the talks. (You are submitting your talk, right?)

We’ll have more details coming your way in the next few weeks, so stay tuned. After March 25th, we’ll get to selecting talks, and let you all know. Get your tickets now – we can’t wait to see you all in eight-and-a-half weeks!

Ask Hackaday: Wired Or Wireless Headphones?

March 16, 2026 by Al Williams 69 Comments

They say you should never throw out old clothes because they will come back in style one day. Maybe they are right. We noted in a recent BBC post that, apparently, wired headphones are making a comeback. Like many people, we were dismayed when Apple took the headphone jack out of the iPhone and, as [Thomas Germain] notes, even Google eventually ejected the normal headphone jack. (Although, in fairness, most of the Pixel phones we’ve seen come with a pair of USB-C earbuds.)

On the face of it, though, wireless seems to be a good idea. You can get cheap Bluetooth earbuds now, although maybe still not as cheap as wired buds. Sure, they sound terrible, but so do cheap buds. It is a pain to charge them, of course, but not having to untangle wires is a benefit. On the other hand, you never have to charge your wired headphones.

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Hackaday Links: March 15, 2026

March 15, 2026 by Tom Nardi 3 Comments

Some days, it feels like we’re getting all the bad parts of cyberpunk and none of the cool stuff. Megacorps and cyber warfare? Check. Flying cars and holograms? Not quite yet. This week, things took a further turn for the dystopian with the news that a woman was hospitalized after an altercation with a humanoid robot in Macau. Police arrived on scene, took the bot into custody, and later told the media they believed this was the first time Chinese authorities had been called to intervene between a robot and a human.

The woman, reportedly in her seventies, was apparently shocked when she realized the robot was standing behind her. After the dust settled, the police determined it was being operated remotely as part of a promotion for a local business. We’ve heard there’s no such thing as bad publicity, but we’re not sure the maxim holds true when you manage to put an old lady into the hospital with your ad campaign.

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