Researchers say they can spy on your browsing by measuring SSD activity through a browser API — claim FROST attack requires no permissions or user interaction to identify which apps and websites you're using
www.tomshardware.com
The technique correctly identified visited websites with roughly 89% accuracy and running applications with roughly 96% accuracy on a test Mac
  • Jesus_666@lemmy.worldEnglish
    2·
    18 hours ago

    The OS can cache parts of files in RAM to speed up accesses. That cache is called the page cache. If your file is big enough you can fairly reliably access random parts of it and expect the OS to not have cached them no matter how big the page cache is. So each read hits the SSD, allowing you to observe its performance.