In theory, water and electric current will cause electrolysis and produce oxygen and hydrogen as the water breaks apart. In practice, doing it well can be tricky. [Relic] shows an efficient way to produce an electrolysis cell using a few plastic peanut butter jars and some hardware.

The only tricky point is that you need hardware made of steel and not zinc or other materials. Well, that and the fact that the gasses you produce are relatively dangerous.

To that end, [Relic] includes an “I don’t want to explode switch” in the system by routing tubes of gas through a second jar filled with water so that the water will block its return.

Of course, we’ve seen the same setup created with a battery, two coils of wire, and some test tubes, but this can certainly produce more hydrogen faster. Like most of these designs, you can scale them by adding more steel parts. The more surface area, the more gas you’ll produce.

We’ve seen a number of similar generators before, but each one is a little different. If you want to get really fancy, you can turn to automation.

If you want to remap some mouse or keyboard keys, and you use Linux, it is easy. If you use Windows or another operating system, you can probably do that without too much trouble. But what if you use all of them? Or what if you don’t have access to the computer in question? Thanks to [jfedor2], you can reach for a Raspberry Pi Pico and make this handy key-and-mouse remapping hardware dongle.

But you can do more than just swapping control and caps lock because the software is pretty sophisticated. For instance, you can define layers like you might find in a custom keyboard setup — pressing one key can trigger a layer that redefines the functions of all of the other keys. There are programmable macros and a mechanism to differentiate between a key being tapped or held.

Since it also works with mice, you can trigger macros from mouse buttons, or remap your keyboard arrow keys to the mouse’s scroll wheel. And you can configure all of this from a web browser.

On the hardware side, the code supports several different off-the-shelf and custom boards. There’s also a nice enclosure to make it look like an off-the-shelf product. There are also serial and Bluetooth versions of the device, which map them to a USB HID connection.

This has applications for accessible devices. We can also envision it being useful with turnkey devices that you might want to customize without having to reverse-engineer the existing software. Because of the mouse/keyboard cross-functionality, this might have been just the ticket for resurrecting an old light pen, for instance. If you want to dive into the HID spec that makes this whole thing work, we can help with that. What will you do with it?

Since the very beginning, solid-propellants have been the cornerstone of amateur rocketry. From the little Estes rocket picked up from the toy store, to vehicles like the University of Southern California’s Traveler IV that (probably) crossed the Kármán line in 2019, a rapidly burning chunk of solid propellant is responsible for pushing them skyward. That’s not to say that amateur rockets powered by liquid propellants are completely unheard of … it’s just that getting them right is so ridiculously difficult that comparatively few have been built.

But thanks to [Half Cat Rocketry], we may start to see more hobbyists and students taking on the challenge. Their Mojave Sphinx liquid-fueled rocket is not only designed to be as easy and cheap to build as possible, but it’s been released as open source so that others can replicate it. All of the 2D and 3D CAD files have been made available under the GPLv3 license, and if you’re in the mood for a little light reading, there’s a nearly 370 page guidebook you can download that covers building and launching the rocket.

Now of course we’re still talking about literal rocket science here, so while we don’t doubt a sufficiently motivated individual could put one of these together on their own, you’ll probably want to gather up a couple friends and have a well-stocked makerspace to operate out of. All told, [Half Cat] estimates you should be able to build a Mojave Sphinx for less than $2,000 USD, but that assumes everything is done in-house and you don’t contract out any of the machining.

The design is the result of years of research and development that was aimed at distilling a liquid-fueled rocket down to its most basic form. There’s no gas generator, no turbine, no pumps of any kind. Controlling the flow of propellants within the rocket requires only a pair of servo-actuated valves thanks to the ingenious use of dual-acting vapor pressurization. Put simply, the rocket uses one large vertical tank that’s internally divided by a movable piston, with the oxidizer — nitrous oxide — on one side and the fuel — nearly any flammable liquid, such as alcohol or gasoline — on the other. The high-pressure nitrous oxide pushes down on the piston, which in turn pressurizes the fuel.

To get the most out of your investment, the Mojave Sphinx is designed to be entirely reusable. Assuming it makes a soft enough landing, you just need to refill the tank and launch it again. In practice it’s a bit more involved than that, but the team of [Half Cat] say they’ve managed to fly the same rocket multiple times in a single day. The handbook even has a handy maintenance schedule that tells you how often you should check or replace different components of the rocket. For example, it advises replacing the propellant piston o-rings every third flight.

The downside? There’s only so much performance you can wring out a rudimentary propulsion system like this. When compared to more simplistic solid-propellant rockets, the higher mass of the Mojave Sphinx puts the maximum altitude of the 96 inch (2.4 meter) long rocket at around 10,000 feet (3 kilometers). Still, we know plenty of folks who would call that a worthy compromise for being able to say they built their own liquid rocket.

Thanks to [concretedog] for the tip.

Toyota è stata colpita da un massiccio data breach, con 240 GB di dati sensibili esposti su un forum di cybercrime. L’attacco è stato rivendicato dal gruppo di hacker noto come ZeroSevenGroup. I dati esfiltrati sono disponibili al download su un noto forum di cybercrime.

Dettagli

L’infiltrazione ha permesso agli aggressori di esfiltrare una vasta gamma di informazioni, tra cui dati di clienti e dipendenti, informazioni finanziarie, contratti, e-mail e dettagli dell’infrastruttura di rete. Secondo ZeroSevenGroup, l’accesso è stato ottenuto utilizzando lo strumento open source ADRecon, che consente di estrarre informazioni dagli ambienti Active Directory. Gli aggressori hanno potenzialmente ottenuto l’accesso al server di backup, con i file esposti che risalgono al 25 dicembre 2022.

Sul noto forum sono disponibili al download tutti i dati esfiltrati, senza necessità di acquisto, come precisato dal gruppo nei commenti del post.

Immagine del post rinvenuta nel Dark Web

Commento al post precedente rinvenuto nel Dark Web

Implicazioni e Risposta di Toyota

Toyota ha dichiarato che l’impatto complessivo della violazione è stato limitato e che sta collaborando con le persone colpite per fornire assistenza. Tuttavia, l’azienda non ha fornito dettagli specifici sulla data della violazione o sulle modalità di attacco. Questo incidente segue una serie di altre violazioni che hanno colpito Toyota negli ultimi anni, inclusi attacchi ransomware e configurazioni errate nei servizi cloud che hanno esposto milioni di dati personali dei clienti.

Conclusione

Il recente data breach ai danni di Toyota evidenzia ancora una volta l’importanza della sicurezza informatica per le grandi aziende. Nonostante le misure di sicurezza implementate, le minacce persistono e richiedono una vigilanza costante. Toyota ha affermato di aver adottato ulteriori misure per monitorare e proteggere le sue infrastrutture, ma solo il tempo dirà se queste saranno sufficienti a prevenire futuri incidenti.

L'articolo Violazione di Sicurezza in Toyota: Dati Sensibili di Clienti e Dipendenti Compromessi proviene da il blog della sicurezza informatica.

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