Ukraine's "IT army" of volunteer hackers announced a new set of targets on Thursday - including the Belarusian railway network and Russia's homegrown satellite-based navigation system, GLONASS. From a report: "We need to mobilise and intensify our efforts as much as possible," a post on the "IT army" Telegram channel said. The post listed the top priorities targeted by the group, including Belarus' railway, Russian telecom companies, and GLONASS, which is Russia's alternative to the Global Positioning System (GPS) satellite navigation network. Ukraine has called on its hacker underground to help protect critical infrastructure and conduct cyber spying missions against Russian troops, Reuters previously reported. Kyiv announced the formation of its "IT army" on Saturday. A hacking team focused on Belarus, which has been used as a key staging post for Russia's invasion of Ukraine, called the Belarusian Cyber Partisans told Reuters on Tuesday they had disabled railway traffic systems there and attacked the network because it had been used to transport Russian soldiers.

An overview of Tencent's burgeoning games dominance. From a report: In the West, tech giant Tencent is not yet a household name. While its size and acquisitions have made frequent headlines, its presence has remained understated relative to competitors like Amazon and Google, with the name occasionally peppered into conversations as an example of China's burgeoning influence on technology and entertainment around the world. But in China, Tencent is everywhere. It's behind the nation's most popular messaging app, WeChat, with over 1.2 billion monthly active users. It's the behemoth that created QQ.com, one of the country's largest web portals and the world's fourth most visited website. And with Tencent Music, it also owns the majority of China's music services, with 841 million active users. It's also China's -- and the world's -- biggest game company. And with a growing presence internationally, we recently decided to take a closer look at how it operates and what it owns.

Researchers have a new view of HR 6819: two stars, one of them a "vampire." From a report: Astronomers who thought they had discovered a black hole on our cosmic doorstep have said they were mistaken, instead revealing they have found a two-star system involving a stellar "vampire." The system, known as HR 6819 in the constellation Telescopium, was in the headlines in 2020 when researchers announced it contained a black hole. At just 1,000 light years from Earth, it was the closest yet found to our planet. At the time the team behind the work said the presence of a black hole was necessary to make sense of the movement of two stars in the system, suggesting a black hole and one star orbited each other while the second star moved in a wider orbit. Now the researchers say they were mistaken: the black hole does not exist.

Dietrich Baade, an emeritus astronomer at European Southern Observatory (ESO) and a co-author of the work, said just one blob of light was previously detected, containing the hallmarks of two stars. Since both stars are of similar brightness and the same age, they would normally have the same mass and would whirl each other around with similar, high velocity. "Since we saw that only one of the stars was whirled around at high velocity by some massive object, which we didn't see, we assumed this unseen massive object to be a third body, namely a black hole," he said.

The U.S. Securities and Exchange Commission is scrutinizing creators of NFTs and the crypto exchanges where they trade to determine if some of the assets run afoul of the agency's rules, Bloomberg News reported Thursday, citing people familiar with the matter. From the report: A focus of the probe is on whether certain nonfungible tokens, digital assets that can be used to denote ownership of things like a painting or sports memorabilia, are being utilized to raise money like traditional securities, said the people. Over the past several months, attorneys in the SEC's enforcement unit have sent subpoenas demanding information about the token offerings. The inquiry is the latest attempt by the SEC under Chair Gary Gensler to ensure the crypto market adheres to its regulations. In February, the commission and state regulators levied a record $100 million fine against BlockFi, a popular virtual-currency exchange, for failing to register products that pay customers high interest rates to lend out their digital tokens.

Well-known open source advocate and developer Miguel de Icaza, who joined Microsoft in 2016 when it acquired Xamarin, the mobile-tool company he cofounded, is leaving Microsoft. From a report: De Icaza -- a Microsoft distinguished engineer -- confirmed to me on March 2 that he has decided to leave and will be taking some time off before moving to a new job. Ever since de Icaza's colleague and former Xamarin CEO Nat Friedman left Microsoft in November 2021, there's been speculation that de Icaza also would leave Microsoft. Friedman was the CEO of Microsoft's GitHub division. Friedman said late last year he had decided to go back to his startup roots. De Icaza has been with Microsoft for just over six years. Most recently, he has been working on various AI projects with the ONNX team. ONNX, the Open Neural Network Exchange, is an evolving standard format for machine learning models that is being championed by Microsoft, Meta and Amazon. De Icaza worked with the team to get the ONNX runtime on Android and iOS to support mobile developers using Xamarin.

The Wordle clones are back on the App Store, just a few weeks after Apple wiped out nearly all the copycat games in January. From a report: A quick glance at the top free apps on the App Store reveals at least two prominently placed Wordle-alikes, while diving into Apple's more specific word games category (or simply searching "Wordle") surfaces plenty of other copycats, many of which appear to have been part of Apple's first wave of takedowns a few months ago. None of the new games are actively passing themselves off as Wordle -- at least, not in name. Instead, the clones have creatively rebranded to "Wordus," "Word Guess," "Wordl," and other thinly veiled references to the original game. But all of them offer some variant on Wordle's gameplay, down to the same gameplay, UI, design, and color scheme.

Ukraine has scrapped a plan to reward people who donated to its fight against a Russian invasion with newly created crypto assets, following complications with the project. From a report: The official verified Twitter account for Ukraine said on Wednesday it planned to issue a so-called "airdrop," a common tool for early-stage crypto platforms to attract users by offering free tokens to jump start a project. But a day later, Ukraine's Vice Prime Minister Mykhailo Federov said in a tweet that the nation had decided to cancel the project. The tweet wasn't independently verified by Bloomberg News. "Every day there are more and more people willing to help Ukraine to fight back the aggression," Federov said in a tweet from his personal verified Twitter account on Thursday. He added that Ukraine will announce a drop of nonfungible tokens to support the Ukrainian Armed Forces soon, but that it has no plans to issue any fungible tokens such as cryptocurrencies.

An anonymous reader quotes a report from Reuters: Senator Elizabeth Warren and three other Democratic lawmakers on Wednesday urged the Treasury Department to ensure the cryptocurrency industry is complying with sanctions imposed on Russia, expressing concern that digital assets could be used to undermine U.S. foreign policy goals. In a letter sent to Treasury Secretary Janet Yellen, Warren along with Senators Sherrod Brown, Mark Warner and Jack Reed questioned whether the department's Office of Foreign Assets Control (OFAC) had effective guidelines in place to enforce sanctions compliance within the crypto industry. "Strong enforcement of sanctions compliance in the cryptocurrency industry is critical given that digital assets, which allow entities to bypass the traditional financial system, may increasingly be used as a tool for sanctions evasion," the letter said.

Biden administration officials have said that they do not believe Russia would be able to use cryptocurrency to completely evade sanctions. "The scale that the Russian state would need to successfully circumvent all U.S. and partners' financial sanctions would almost certainly render cryptocurrency as an ineffective primary tool for the state," said Carol House, the director of cybersecurity for the National Security Council, during a webinar on Wednesday. But the Democratic lawmakers said it was unclear whether OFAC had appropriate guidelines to effectively monitor the crypto industry's compliance with sanctions, noting that the agency has become "increasingly reliant upon voluntary self-disclosure."

Microsoft's latest Windows 11 test build is another substantial one, adding two important features: payment information, and a new security feature called Smart App Control that will watch over new apps and games that you add to your PC. PCWorld reports: Microsoft released Windows 11 Insider Preview Build 22567 for the Dev Channel on Wednesday with other changes, tooâ"including a tweak to Windows Update, so that now you can configure your PC to turn on an update when renewable energy is at its most plentiful. (Remember, code that Microsoft tests within the Dev Channel may make its way to your PC eventually -- or not.)

Asking for credit-card information within Windows isn't that startling, as you've probably already entered payment information into the Microsoft ecosystem either for buying apps or movies on the Microsoft Store app or for making similar purchases via your Xbox. Still, those transactions are normally performed via your Microsoft Account web page, which manages all of that online and behind the scenes. (You can reach them via the Windows 11 Settings > Accounts > Your Microsoft account.) Microsoft considers the additional credit-card info as part of the subscription option it added last month. Now, if your subscription risks falling through because of an expired credit card, Microsoft will alert you. Conceptually, however, it implies that your PC is as much a tool to make purchases as it is to simply work and game.

Another interesting addition is what Microsoft calls Smart App Control, or SAC. Microsoft describes it as a "new security feature for Windows 11 that blocks untrusted or potentially dangerous applications." What those applications are, apparently, is up to Microsoft. And yes, there's always a concern that SAC would flag otherwise innocuous applications that it simply hasn't seen before. But Microsoft is gently easing SAC onto your PC. For one thing, you'll need to perform a clean install to enable it. For another, SAC won't immediately insert itself. Other tweaks and changes include the ability to have Windows update your PC when clean energy is more commonly available (via Microsoft's partners electricityMap or WattTime) and better integration between your Android phone and PC via Windows 11 OOBE (Out of the Box Experience).

Additionally, "Microsoft now offers wider availability of speech packs to improve transcription, the ability to choose a mic for dictation/ transcription, and the ability to mute your speakers by simply clicking the volume icon in the hardware indicator for volume," reports PCWorld.

sciencehabit shares a report from Science.org: Physicists in Australia have programmed a quantum computer half a world away to make, or at least simulate, a record-size time crystal -- a system of quantum particles that locks into a perpetual cycle in time, somewhat akin to the repeating spatial pattern of atoms in an actual crystal. The new time crystal comprises 57 quantum particles, more than twice the size of a 20-particle time crystal simulated last year by scientists at Google. That's so big that no conventional computer could simulate it, says Chetan Nayak, a condensed matter physicist at Microsoft, who was not involved in the work. "So that's definitely an important advance." The work shows the power of quantum computers to simulate complex systems that may otherwise exist only in physicists' theories.

[Philipp Frey and Stephan Rachel, theorists at the University of Melbourne] performed the simulation remotely, using quantum computers built and run by IBM in the United States. The qubits, which can be set to 0, 1, or 1 and 0 at once, can be programmed to interact like magnets. For certain settings of their interactions, the researchers found, any initial setting of the 57 qubits, such as 01101101110 ..., remains stable, returning to its original state every two pulses, the researchers report today in Science Advances. [...] Whereas more than 100 researchers worked on the Google simulation, Frey and Rachel worked alone to perform their larger demonstration, submitting it to the IBM computers over the internet. "It was just me, my graduate student, and a laptop," Rachel says, adding that "Philipp is brilliant!" The entire project took about 6 months, he estimates. The demonstration isn't perfect, Rachel says. The flipping pattern ought to last indefinitely, he says, but the qubits in IBM's machines can only hold their states long enough to simulate about 50 cycles. Ultimately, the stabilizing effect of the interactions might be used to store the state of a string of qubits in a kind of memory for a quantum computer, he notes, but realizing such an advance will take -- what else? -- time.

An anonymous reader quotes a report from Reuters: Alphabet's Google from April 4 will require employees back about three days a week in some of its U.S., U.K. and Asia Pacific offices, its first step to end policies that allowed remote work because of COVID-19 concerns. An internal email on Wednesday seen by Reuters told employees in the San Francisco Bay Area that "advances in prevention and treatment, the steady decline in cases we continue to see and the improved safety measures we have implemented ... now mean we can officially begin the transition to the hybrid work week."

Google expects most employees will be in offices about three days a week, with some variance by team and role. Everyone coming to the office must be fully vaccinated against COVID-19 or have an approved exemption, according to the email from John Casey, Google's vice president of global benefits. Unvaccinated workers without an exemption will be given an option to seek one or apply for permanent remote work. Fully vaccinated workers will not have to wear masks in Bay Area offices, Casey said. Employees not prepared to return April 4 also can seek a remote-work extension, Google said. Google largely has restored office perks such as free meals, massages and transit. But while business visitors and meetings are permitted, employees cannot yet bring back families or children to dine or visit with them.

BrendaEM shares a report from The Register: Ukrainian news website Ukrainska Pravda says the nation's Centre for Defense Strategies think tank has obtained the personal details of 120,000 Russian servicemen fighting in Ukraine. The publication has now shared this data freely on its website. The Register and others have been unable to fully verify the accuracy of the data from the leak. The records include what appears to be names, addresses, passport numbers, unit names, and phone numbers. Some open source intelligence researchers on Twitter said they found positive matches, as did sources who spoke confidentially to El Reg; others said they couldn't verify dip-sampled data. Rumors swirled on the internet that activists were behind the disclosure. The Ukrainian news agency said the personnel records were obtained from "reliable sources." Whether or not the database's contents is real, the impact on Russian military morale -- knowing that your country's enemies have your personal details and can contact your family if you're captured, killed, or even still alive -- won't be insignificant.

In a 15-minute-long video, YouTuber Quinn Nelson from Snazzy Labs explains how he managed to shrink the current M1 Mac Mini by 78% without harming performance. 9to5Mac reports: In conclusion, by rearranging the internals and swapping out the power supply, Nelson was able to reduce the size of the Mac mini enclosure by 78%. He organized all the parts inside a 3D-printed body with a mini Mac Pro motif.

The reason that theoretical space savings are so huge is because when Apple released the first round of Apple Silicon computers, they did not change the hardware industrial design at all. So the current Mac Mini enclosure is designed to fit an Intel CPU and circuit board, including having to accommodate the large fans and heat sinks the Intel chip required.

But with the power efficiency of the M1, Apple has the headroom to do something much more drastic. Indeed, a lot of the M1 Mac mini internals is just empty space. The Snazzy Labs video gives a glimpse at what is possible if Apple is more ambitious with the next-generation Mac mini design, and tries to create something truly mini. The CAD files and schematics can be viewed here.

New submitter briaguya shares a report from VideoCardz: Hackers that infiltrated NVIDIA systems are now threatening to release more confidential information unless the company commits to open sourcing their drivers. It is unclear what the stolen data contains, but the group confirmed that there are 250GB of hardware related data in their possession. Furthermore, the group confirmed they have evaluated NVIDIA position, which means that NVIDIA is might trying to communicate with the group to prevent future leaks. The group has already published information on NVIDIA DLSS technology and upcoming architectures. Yesterday, Nvidia reportedly retaliated against the hacker group known as "Lapsus$" by sneaking back into the hacker's system and encrypting the stolen data. The group claimed that it had a backup of the data, though.

An anonymous reader quotes a report from Ars Technica: Mykhailo Fedorov, the vice prime minister and minister of digital transformation of Ukraine, has publicly called on "all game development companies" to "temporarily block all Russian and Belorussian accounts" in response to Russia's ongoing invasion of Ukraine. In a tweet from his verified account, Fedorov also called on esports platforms to "temporarily stop the participation of Russian and Belorussian teams and gamers in all international esports events and cancel all international events holding [sic] on the territory of Russia and Belarus."

These moves, Fedorov suggests, "will motivate the citizens of Russia to proactively stop the disgraceful military aggression" by the Russian government. "In 2022, modern technology is perhaps the best answer to the tanks, multiple rocket launchers... and missiles." In an additional note directed at the Xbox and PlayStation Twitter accounts, Fedorov wrote that "if you support human values, you should [leave] the Russian market!" In a follow-up tweet, Fedorov also asked Riot Games, EA, Ubisoft, Gameloft, and Wargaming to "close your office in Russia" in solidarity with Ukraine. "There's no place for [an] aggressor on the global technological map!"