Websites Spying on You via SSD Activity Should Receive a FROST-y Welcome - PC Perspective

Researchers say FROST is a new browser side-channel attack that can infer what other tabs or sites are open by measuring SSD I/O contention.

The attack uses JavaScript and can run without user interaction, raising privacy concerns for Apple device users.

It may expose browsing activity through local storage access patterns, including OPFS-related behavior.

Tools like OPFS Explorer can help inspect local OPFS files and understand the issue.