How Websites Spy on You by Timing Your SSD Activity

Hinzugefügt: 2026-06-01

[00:00:00]One website can infer which other tabs and apps you have open just by timing your solid state drive. Researchers call the attack Frost. You only have to open the page, no clicks and no extra permission. It's JavaScript uses private site storage to measure your drive in the background. It keeps reading a huge hidden file and tracks tiny slowdowns.

[00:00:14]Those delays show when the drive is busy with something else. A trained machine learning model can link that timing pattern to likely sites and apps. So, this is not just web tracking. It can reach across tabs and even across different browsers by watching the hardware they all share. Your browsers are separate. Your drive is one shared leak.