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The Deathray: A simple way for an untrusted site to freeze a Mac (auberon.xyz)
submitted 2 weeks ago* (last edited 2 weeks ago) by inari@piefed.zip to c/technology@lemmy.world
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[-] IllNess@infosec.pub 3 points 2 weeks ago

So this is interesting.

I am running this on a Mac (Intel), on clean install of Firefox.

It didn't work.

If anyone is curious I'll post what I think might be relevant.

I got this error:

Uncaught (in promise) TypeError: can't access property "getPreferredCanvasFormat", navigator.gpu is undefined
    main https://auberon.xyz/deathray/:15

But I looked at the documentation for getPreferredCanvasFormat() and it exist.

mdn_: GPU: getPreferredCanvasFormat() method

So I looked at about:config and I listed what I think might be relevant:

config set to
dom.webgpu.enabled false
webgl.forbid-hardware false
webgl.disabled false
[-] Euphoma@lemmy.ml 3 points 2 weeks ago

The site says at the top that it uses webgpu to freeze macs. And you have webgpu disabled

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this post was submitted on 11 Sep 2026
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