Tag: feeds

Wi-Fi gets multi-gigabit, multi-user boost with upgrades to 802.11ac

(credit: Aurich Lawson) The Wi-Fi Alliance industry group is now certifying products that can deliver multi-gigabit speeds and improve coverage in dense networks by delivering data to multiple devices simultaneously. The new certification program, announced today , focuses on the so-called “Wave 2” features of the 802.11ac specification. 802.11ac is a few years old , but it includes several important features that were not available at launch. One such feature is MU-MIMO (multi-user, multiple-input, and multiple-output), which we wrote a feature on in May 2014. MU-MIMO is powered by multi-user beamforming technology that lets wireless access points send data streams to at least three users simultaneously. Without MU-MIMO, routers stream to just one device at a time but switch between them very fast so that users don’t notice a slowdown except when lots of devices are on the network. With the 80MHz channels supported in 802.11ac Wave 1, each data stream could provide up to 433Mbps and, when coupled with MU-MIMO routers, can send up to 433Mbps to at least three users simultaneously for a total of 1.3Gbps. But in addition to supporting MU-MIMO, Wave 2 also doubles the maximum channel bandwidth from 80MHz to 160MHz, boosting the potential throughput of each stream to 866Mbps. Wave 2 also supports four spatial streams instead of three, further boosting the theoretical maximum capacity. Technically, 802.11ac supports up to eight streams, but the certification program is still at four. Delivering eight streams with these data rates would use a lot of electricity. Read 3 remaining paragraphs | Comments

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Wi-Fi gets multi-gigabit, multi-user boost with upgrades to 802.11ac

A ZFS developer’s analysis of the good and bad in Apple’s new APFS file system

Two hours or so of WWDC keynoting and Tim Cook didn’t mention a new file system once? (credit: Andrew Cunningham) This article was originally published on Adam Leventhal’s blog in multiple parts . Apple announced a new file system that will make its way into all of its OS variants ( macOS , tvOS , iOS , watchOS ) in the coming years. Media coverage to this point has been mostly breathless elongations of Apple’s developer documentation . With a dearth of detail I decided to attend the presentation and Q&A with the APFS team at WWDC. Dominic Giampaolo and Eric Tamura, two members of the APFS team, gave an overview to a packed room ; along with other members of the team, they patiently answered questions later in the day. With those data points and some first-hand usage I wanted to provide an overview and analysis both as a user of Apple-ecosystem products and as a long-time operating system and file system developer. The overview is divided into several sections. I’d encourage you to jump around to topics of interest or skip right to the conclusion (or to the tweet summary ). Highest praise goes to encryption; ire to data integrity. Read 48 remaining paragraphs | Comments

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A ZFS developer’s analysis of the good and bad in Apple’s new APFS file system

“Godless” apps, some found in Google Play, root 90% of Android phones

(credit: greyweed ) Researchers have detected a family of malicious apps, some that were available in Google Play , that contain malicious code capable of secretly rooting an estimated 90 percent of all Android phones. In a recently published blog post , antivirus provider Trend Micro said that Godless, as the malware family has been dubbed, contains a collection of rooting exploits that works against virtually any device running Android 5.1 or earlier. That accounts for an estimated 90 percent of all Android devices. Members of the family have been found in a variety of app stores, including Google Play, and have been installed on more than 850,000 devices worldwide. Godless has struck hardest at users in India, Indonesia, and Thailand, but so far less than 2 percent of those infected are in the US. Once an app with the malicious code is installed, it has the ability to pull from a vast repository of exploits to root the particular device it’s running on. In that respect, the app functions something like the many available exploit kits that cause hacked websites to identify specific vulnerabilities in individual visitors’ browsers and serve drive-by exploits. Trend Micro Mobile Threats Analyst Veo Zhang wrote: Read 6 remaining paragraphs | Comments

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“Godless” apps, some found in Google Play, root 90% of Android phones

Microsoft will use Steam to sell Windows games, not just its own store

Quantum Break : not available on Steam. While some of Microsoft’s older game titles, such as Age of Empires II HD (a 2013 update of a 1999 game) are found on Valve’s Steam platform, its latest high-profile titles, such as Forza 6 Apex and Quantum Break, are exclusive to the Windows Store. But this is going to change, with Microsoft planning to release more titles on the popular store. Phil Spencer, head of the Xbox team at Microsoft, was talking on Giant Bomb’s E3 stream , via GameSpot . When it comes to PC gaming, the Windows Store is very much an also-ran, with Steam the dominant force. As Spencer noted, “I don’t think Valve’s hurt by not having [Microsoft’s] first-party games in their store right now. They’re doing incredibly well.” Accordingly, Spencer said that Microsoft “will ship games on Steam again.” Meanwhile, Microsoft’s own experience had been more inconsistent. While some games have done well in the Windows Store, with Spencer naming both Forza 6 Apex and Killer Instinct as successful titles, he said that ” Quantum Break wasn’t our best PC release” and that Gears of War Ultimate Edition was merely “OK.” Read 3 remaining paragraphs | Comments

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Microsoft will use Steam to sell Windows games, not just its own store

Xbox Play Anywhere: buy the game once, play on Xbox One and PC (multiplayer too)

(credit: Microsoft) When announcing  Gears of War 4 at its E3 event today, Microsoft unveiled a new gaming feature called Xbox Play Anywhere. Essentially, this initiative allows a gamer to purchase a title once but still have the option to play on console  and  PC. As perhaps the headlining feature of Xbox Play Anywhere, multiplayer across platform will become a reality. With  Gears of War 4 , for instance, the co-op modes will support this crossplay between Windows 10 and Xbox One users. Progress and achievements will be shared on Xbox Live across these platforms at no additional cost. In addition to Gears of War 4,  Microsoft announced that  Forza Horizons 3  will be another upcoming Xbox Play Anywhere title. Additionally, the game will allow for four player campaign co-op for the first time. And this version of the game will feature “the largest car roster ever seen in Horizon ,” according to Ralph Fulton from Playground Games. Read 2 remaining paragraphs | Comments

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Xbox Play Anywhere: buy the game once, play on Xbox One and PC (multiplayer too)

Gawker declares bankruptcy, will auction itself off in wake of Hulk Hogan lawsuit

(credit: Miguel Discart ) UPDATE 3:00pm ET : The Verge located and published Gawker’s federal Chapter 11 bankruptcy protection filing, which we have mirrored here . In that document, owner Nick Denton estimates the company’s assets at $50 million to $100 million, and liabilities at $100 million to $500 million. Ryan Mac, a reporter at Forbes , provided Ars with a three-page statement from Gawker, that we have published in full , here. Read 9 remaining paragraphs | Comments

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Gawker declares bankruptcy, will auction itself off in wake of Hulk Hogan lawsuit

“Bluetooth 5” spec coming next week with 2x more range and 4x better speed

Bluetooth 5.0, the latest version of the ubiquitous wireless standard, is set to be announced on June 16, according to an e-mail sent by Bluetooth SIG Executive Director Mark Powell. The update will apparently be called “Bluetooth 5” without a point number in an effort to “[simplify] marketing.” It’s primarily of interest because the update promises to double the range and quadruple the speed of Bluetooth 4.2. It also adds “significantly more capacity to advertising transmissions,” which is more exciting than it sounds because it doesn’t necessarily have anything to do with what you normally think of when you think of “advertising.” In the Bluetooth spec, an “advertising packet” allows Bluetooth devices to send small snippets of information to other Bluetooth devices even if the two aren’t actually paired or connected to one another. For instance, when you go to pair a Bluetooth keyboard or speaker with one of your devices, advertising packets can let you see the name of the device before you’ve paired it so you can distinguish it from all the other Bluetooth devices that are within range. The same technology is used by wireless beacons to transmit information about the location you’re in and by Apple’s AirDrop and Handoff features to let your Macs and iDevices know what your other Macs and iDevices are up to. Read 2 remaining paragraphs | Comments

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“Bluetooth 5” spec coming next week with 2x more range and 4x better speed

Verizon could rule the ’90s cyberscape as owner of both AOL and Yahoo

Yahoo’s once-iconic San Francisco billboard, pictured here in 2011. (credit: Scott Schiller ) Verizon is submitting a $3 billion (£2 billion) bid to purchase Yahoo’s core Internet business, according to   The Wall Street Journal , which cites an anonymous source. Though at least one more round of bidding is expected, Verizon is reportedly the leading contender. A Verizon spokesperson declined comment when contacted by Ars this morning. Yahoo has been shopping itself around for months  in an attempt to sell off just about everything except its valuable stake in Chinese e-commerce company Alibaba. Yahoo is also looking to sell other assets including real estate and patents, but Verizon reportedly isn’t interested in buying those. Read 2 remaining paragraphs | Comments

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Verizon could rule the ’90s cyberscape as owner of both AOL and Yahoo

Human eye might be able to detect entangled photons

(credit: Flickr user Hullabaloon. ) One of the less satisfying aspects of modern physics is the increasing separation between the phenomena that we measure and the experimenter. We measure almost everything today indirectly. If we operate our lab safely, we never directly detect an electron—instead, that charge creates a tiny potential difference on an amplifier. The amplifier generates a larger current that might drive a coil that is attached to a needle on a dial. This level of indirection is the reality of modern physics. And the alternative—passing large currents through your body—is discouraged. Yet, the desire to really see what is going on is hard to resist. This has led to an interesting publication that proposes a way to detect quantum mechanical behavior directly with the human eye. Seeing single photons The behavior in question is entanglement. But before getting to that, let’s talk about the eye. The human visual system is a pretty poor instrument as far as optics go. The eye is actually pretty good; experiments have revealed that the rods in your eye are sensitive to single photons. The brain, however, is smart; rather than try to sort out all the noise associated with every single photon detection, it tells the rods and cones not to bother it until the light reaches a certain intensity. Read 15 remaining paragraphs | Comments

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Human eye might be able to detect entangled photons

TeamViewer confirms number of hacked user accounts is “significant”

Enlarge It was a tough week for TeamViewer, a service that allows computer professionals and consumers to log into their computers from remote locations. For a little more than a month, a growing number of users have reported their accounts were accessed by criminals who used their highly privileged position to drain PayPal and bank accounts . Critics have speculated TeamViewer itself has fell victim to a breach that’s making the mass hacks possible. On Sunday, TeamViewer spokesman Axel Schmidt acknowledged to Ars that the number of takeovers was “significant,” but it continued to maintain that the compromises are the result of user passwords that were compromised through a cluster of recently exposed megabreaches involving more than 642 million passwords belonging to users of LinkedIn, MySpace, and other services. Ars spoke with Schmidt to get the latest. What follows is a lightly edited transcript of the conversation: Read 15 remaining paragraphs | Comments

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TeamViewer confirms number of hacked user accounts is “significant”