Italy’s privacy watchdog said Friday it had blocked ChatGPT, saying the artificial intelligence app did not respect user data and could not verify users’ age. The decision “with immediate effect” will result in “the temporary limitation of the processing of Italian user data vis-a-vis OpenAI,” said the Italian Data Protection Authority.

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Source: Slashdot – OpenAI’s ChatGPT Blocked In Italy

Researchers have discovered one of the most massive black holes ever discovered, clocking in at around 32.7 billion times the mass of the sun. It’s located in a galaxy at the center of a massive cluster named Abell 1201, some 2.7 billion light-years away. ScienceAlert reports: The new figure exceeds previous estimates by at least 7 billion solar masses, demonstrating the power of curved light for measuring masses with precision. One way we can find these black holes is looking for an effect called gravitational lensing. This occurs when space-time itself is warped by mass; imagine space-time as a rubber sheet, and the mass as a heavy weight on it. Any light traveling through that region of space-time has to travel along a curved path, and that can look very interesting to an observer watching from afar. […]

The central galaxy, or brightest cluster galaxy (BCG) of Abell 1201, is a large, diffuse elliptical galaxy well-known as a strong gravitational lens. A galaxy far beyond the BCG appears alongside it as an elongated smear, like an eyebrow closely wrapped around its outskirts. This smear was discovered in 2003; in 2017, astronomers found a second, fainter smear, even closer to the galactic center. This implies, astronomers proposed, the presence of a very large black hole at the center of the BCG, but the data available was not detailed enough to resolve the central mass, or reveal more about what was in there.

[Researchers] not only had access to more recent observations, but devised the tools to understand them. They conducted hundreds of thousands of simulations of light moving through the Universe, altering the mass of the black hole at the galaxy’s center, looking for results that replicate the lensing we observe with Abell 1021 BCG. All but one of their models preferred a massive black hole at the center of the galaxy; and the best fit for the mass of that black hole was 32.7 billion times the mass of the Sun. That pushes it well into ultramassive territory, black holes more massive than 10 billion Suns, and close to the theoretical upper limit for black hole masses of 50 billion Suns.
The research has been published in the Monthly Notices of the Royal Astronomical Society.

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Source: Slashdot – Ultramassive Black Hole Discovered To Be 33 Billion Times More Massive Than the Sun

Virgin Orbit is ceasing operations “for the foreseeable future” after failing to secure a funding lifeline, CEO Dan Hart told employees during an all-hands meeting Thursday afternoon. The company will lay off nearly all of its workforce. CNBC reports: “Unfortunately, we’ve not been able to secure the funding to provide a clear path for this company,” Hart said, according to audio of the 5 p.m. ET meeting obtained by CNBC. “We have no choice but to implement immediate, dramatic and extremely painful changes,” Hart said, audibly choking up on the call. He added this would be “probably the hardest all-hands that we’ve ever done in my life.”

The company will eliminate all but 100 positions, amounting to about 90% of the workforce, Hart said, noting the layoffs will affect every team and department. In a securities filing, the company said the layoffs constituted 675 positions, or approximately 85%. “This company, this team — all of you — mean a hell of a lot to me. And I have not, and will not, stop supporting you, whether you’re here on the journey or if you’re elsewhere,” Hart said. Virgin Orbit will “provide a severance package for every departing” employee, Hart said, with a cash payment, extension of benefits, and support in finding a new position — with a “direct pipeline” set up with sister company Virgin Galactic
for hiring.

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Source: Slashdot – Virgin Orbit Fails To Secure Funding, Will Cease Operations

An anonymous reader quotes a report from Phys.Org: What does a stressed plant sound like? A bit like bubble-wrap being popped. Researchers in Israel report in the journal Cell on March 30 that tomato and tobacco plants that are stressed — from dehydration or having their stems severed — emit sounds that are comparable in volume to normal human conversation. The frequency of these noises is too high for our ears to detect, but they can probably be heard by insects, other mammals, and possibly other plants. “Even in a quiet field, there are actually sounds that we don’t hear, and those sounds carry information,” says senior author Lilach Hadany, an evolutionary biologist and theoretician at Tel Aviv University. “There are animals that can hear these sounds, so there is the possibility that a lot of acoustic interaction is occurring.”

The researchers used microphones to record healthy and stressed tomato and tobacco plants, first in a soundproofed acoustic chamber and then in a noisier greenhouse environment. They stressed the plants via two methods: by not watering them for several days and by cutting their stems. After recording the plants, the researchers trained a machine-learning algorithm to differentiate between unstressed plants, thirsty plants, and cut plants. The team found that stressed plants emit more sounds than unstressed plants. The plant sounds resemble pops or clicks, and a single stressed plant emits around 30-50 of these clicks per hour at seemingly random intervals, but unstressed plants emit far fewer sounds. “When tomatoes are not stressed at all, they are very quiet,” says Hadany.

Water-stressed plants began emitting noises before they were visibly dehydrated, and the frequency of sounds peaked after five days with no water before decreasing again as the plants dried up completely. The types of sound emitted differed with the cause of stress. The machine-learning algorithm was able to accurately differentiate between dehydration and stress from cutting and could also discern whether the sounds came from a tomato or tobacco plant. Although the study focused on tomato and tobacco plants because of their ease to grow and standardize in the laboratory, the research team also recorded a variety of other plant species. “We found that many plants — corn, wheat, grape, and cactus plants, for example — emit sounds when they are stressed,” says Hadany. The researchers suggest that these noises “might be due to the formation and bursting of air bubbles in the plant’s vascular system, a process called cavitation,” reports Phys.Org. It’s unclear if the plants are producing these sounds in order to communicate with other organisms.

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Source: Slashdot – Stressed Plants Emit Sounds That Can Be Detected More Than a Meter Away

“The Gaurdian reports on a document leak from Russian cyber ‘security’ company Vulkan,” writes Slashdot reader Falconhell. From the report: Inside the six-storey building, a new generation is helping Russian military operations. Its weapons are more advanced than those of Peter the Great’s era: not pikes and halberds, but hacking and disinformation tools. The software engineers behind these systems are employees of NTC Vulkan. On the surface, it looks like a run-of-the-mill cybersecurity consultancy. However, a leak of secret files from the company has exposed its work bolstering Vladimir Putin’s cyberwarfare capabilities.

Thousands of pages of secret documents reveal how Vulkan’s engineers have worked for Russian military and intelligence agencies to support hacking operations, train operatives before attacks on national infrastructure, spread disinformation and control sections of the internet. The company’s work is linked to the federal security service or FSB, the domestic spy agency; the operational and intelligence divisions of the armed forces, known as the GOU and GRU; and the SVR, Russia’s foreign intelligence organization.

One document links a Vulkan cyber-attack tool with the notorious hacking group Sandworm, which the US government said twice caused blackouts in Ukraine, disrupted the Olympics in South Korea and launched NotPetya, the most economically destructive malware in history. Codenamed Scan-V, it scours the internet for vulnerabilities, which are then stored for use in future cyber-attacks. Another system, known as Amezit, amounts to a blueprint for surveilling and controlling the internet in regions under Russia’s command, and also enables disinformation via fake social media profiles. A third Vulkan-built system — Crystal-2V — is a training program for cyber-operatives in the methods required to bring down rail, air and sea infrastructure. A file explaining the software states: “The level of secrecy of processed and stored information in the product is ‘Top Secret’.”

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Source: Slashdot – ‘Vulkan Files’ Leak Reveals Putin’s Global and Domestic Cyberwarfare Tactics