Wednesday, May 30th, 2018

Time	Event
7:00a	Sonic and Ultrasonic Attacks Damage Hard Drives and Crash OSes Dan Goodin reports via Ars Technica: Attackers can cause potentially harmful hard drive and operating system crashes by playing sounds over low-cost speakers embedded in computers or sold in stores, a team of researchers demonstrated last week. The attacks use sonic and ultrasonic sounds to disrupt magnetic HDDs as they read or write data. The researchers showed how the technique could stop some video-surveillance systems from recording live streams. Just 12 seconds of specially designed acoustic interference was all it took to cause video loss in a 720p system made by Ezviz. Sounds that lasted for 105 seconds or more caused the stock Western Digital 3.5 HDD in the device to stop recording altogether until it was rebooted. The device uses flash storage to house its firmware, but by default it uses a magnetic HDD to store the large quantities of video it records. The attack used a speaker hanging from a ceiling that rested about four inches above the surveillance system's HDD. The researchers didn't remove the casing or otherwise tamper with the surveillance system. The technique was also able to disrupt HDDs in desktop and laptop computers running both Windows and Linux. In some cases, it even required a reboot before the PCs worked properly. The paper titled "Blue Note: How Intentional Acoustic Interference Damages Availability and Integrity in Hard Disk Drives and Operating Systems" can be found here (PDF). Read more of this story at Slashdot. (Comment on this)
10:10p	Qualcomm Launches a New Chip Specifically For Standalone AR, VR Devices Yesterday at the Augmented World Expo in Santa Clara, California, Qualcomm announced a new chip specifically designed for standalone augmented reality and virtual reality devices: the Snapdragon XR1. Ars Technica reports: The company is staying tight-lipped on technical details about the new SoC for the time being. Qualcomm says the SoC will use a Kryo CPU and Adreno GPU, as Qualcomm chips typically do, but exactly how those and the rest of the XR1's building blocks will be configured isn't yet clear. That said, Qualcomm is slotting the XR1 below its existing Snapdragon 845 -- the chip powering most of the year's highest-end smartphones -- in terms of memory bandwidth and GPU power. It is primarily aiming XR1 devices at "lean back" experiences like 360-degree video viewing, at least to start. Even still, the company says the XR1 can output video up to 4K resolution at 60 frames per second, that it'll keep motion-to-photon latency "well below" 20 milliseconds (so as to prevent nausea and motion sickness), and that it can handle both 3DoF and 6DoF tracking for headsets and accompanying controllers if needed. (Devices with the latter allow users to replicate a fuller range of movement in a virtual space.) Qualcomm is talking up the chip's power management and 3D-audio abilities and its support for always-on voice assistance as well. Read more of this story at Slashdot. (Comment on this)

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