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Posted on • Originally published at mlxio.com

A 1GB Browser File Lets Websites Spy on Your SSD Activity

FROST shows a malicious site can infer your tabs and apps by timing SSD activity, turning browser storage into a privacy leak.

Key takeaways

  • A gigabyte-plus browser storage file may be enough for a website to infer what else is happening on your machine — not by reading your files, but by timing how you...
  • That is the privacy risk behind FROST, short for “fingerprinting remotely using OPFS-based SSD timing,” a research technique covered by Ars Technica. The attack ru...
  • Why should web users care that JavaScript can read clues from SSD activity?
  • The unsettling part is not that a site can open your documents. FROST does not mean a webpage can directly read local files, steal passwords from disk, or list fil...

👉 Read the full breakdown on MLXIO

Canonical source: https://mlxio.com/cybersecurity/frost-ssd-timing-spy

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