informatique et high-tech (les meilleures news) %) - Page 1236

Ximoon (./37055) :
Oui, on peut difficilement accélérer la vitesse de la lumière. Après, la bande passante, c'est autre chose.

Brunni (./37058) :
Justement, la transmission est optique ? Pourquoi c'est limité par la vitesse de la lumière ? (ni plus ni moins)

https://www.nozominetworks.com/blog/vulnerabilities-on-bosch-rexroth-nutrunners
In this blog, we detail new vulnerabilities discovered in the Bosch Rexroth NXA015S-36V-B, a popular smart nutrunner (pneumatic torque wrench) used in automotive production lines. We demonstrate that these vulnerabilities could make it possible to implant ransomware on the device, which could be used to cause production line stoppages and potentially large-scale financial losses to asset owners. Another exploitation would allow the threat actor to hijack tightening programs while manipulating the onboard display, causing undetectable damage to the product being assembled or making it unsafe to use. Given that the NXA015S-36V-B is certified for safety-critical tasks, an attacker could compromise the safety of the assembled product by inducing suboptimal tightening, or cause damage to it due to excessive tightening.

Modder re-creates Game Boy Advance games using the audio from crash soundsArs TechnicaCreate a bootable, working Pokémon game by recording it crash multiple times.

After crashing a GBA and recording it over four hours, the modder saw some telltale waveforms in a sound file at about the 1-hour, 50-minute mark. Later in the sound-out, you can hear the actual instrument sounds and audio samples the game contains, played in sequence. Otherwise, it's 8-bit data at 13,100 Hz, and at times, it sounds absolutely deranged.

"2 days of bugfixing later," the modder had a Python script ready that could read the audio from a clean recording of the GBA's crash dump. Did it work? Not without more troubleshooting. One issue with audio-casting ROM data is that there are large sections of 0-byte data in the ROM, which are hard to parse as mute sounds. After running another script that realigned sections based on their location in the original ROM, the modder's ROM was 99.76 percent accurate but "still didn't boot tho." TheZZAZZGlitch later disclaimed that, yes, this is technically using known ROM data to surface unknown data, or "cheating," but there are assumptions and guesses one could make if you were truly doing this blind.

The next fix was to refine the sound recording. By recording three times and merging them with a "majority vote" algorithm, their accuracy notched up to 99.979 percent. That output ROM booted—but with glitched text and a title screen crash. After seven different recordings are meshed and filtered for blank spaces, they achieve 100 percent parity. That's about the halfway point of the video; you should watch the rest to learn how it works on physical hardware, how it works with a different game (an ARM code mystery in a replica cartridge), and how to get the best recordings, including the use of a "cursed adapter" that mixes down to one channel the ugly way.

flanker (./37072) :
Je pense que c'est surtout le meilleur moyen d'inciter les utilisateurs à prendre une autre marque ^^

https://edition.cnn.com/2024/02/04/asia/deepfake-cfo-scam-hong-kong-intl-hnk/index.html
The elaborate scam saw the worker duped into attending a video call with what he thought were several other members of staff, but all of whom were in fact deepfake recreations, Hong Kong police said at a briefing on Friday.

“(In the) multi-person video conference, it turns out that everyone [he saw] was fake,” senior superintendent Baron Chan Shun-ching told the city’s public broadcaster RTHK.

Chan said the worker had grown suspicious after he received a message that was purportedly from the company’s UK-based chief financial officer. Initially, the worker suspected it was a phishing email, as it talked of the need for a secret transaction to be carried out.

However, the worker put aside his early doubts after the video call because other people in attendance had looked and sounded just like colleagues he recognized, Chan said.