Post #2094570

2026-04-02 19:06 UTC

@grant_h maybe. But given this on Chromium-based browsers, there's a chance that something similar might exist for other browsers, too

Replies (4)

@torf@c.im 2026-04-02 19:42

@brunomiguel @grant_h details matter, though. Especially as the info tells about browser extensions rather than software (which browser normally should not even offer access to).

Open ##2094571
@neil_h@ohai.social 2026-04-02 19:53

@brunomiguel @grant_h I agree. If they don't have something like that for Firefox and other browsers, they'll make it. And don't think for a moment that they're the only ones doing it.

Open ##2094574
@vex@kolektiva.social 2026-04-02 21:44

@brunomiguel @grant_h it does. It's called "fingerprinting". This is the norm for large websites that advertise. They do this to assign digital IDs to everyone so they can build advertising profiles & sell all the data. "Age Verification" will make this problem worse because it'll link these profiles to a government ID.

Open ##2094575
@dantalion@fosstodon.org 2026-04-03 05:38

@brunomiguel @grant_h all browsers suffer from this, its a javascript call implemented by all major browser to query installed fonts that can be abused (iirc but its been a while) Use an extension like CanvasBlocker to spoof these requests: https://github.com/kkapsner/CanvasBlocker

Open ##2094576