One hacker. Fewer than a hundred characters of instructions. And over a hundred company websites broken into — by agents, running unsupervised, at fifty dollars a pop.

Oct 21, 2026 12:09

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The Signal Brief

Reuters reports a Chinese-speaking hacker broke into the websites of more than one hundred companies — Deere, SharkNinja, and Cummins among them — while doing almost none of the work himself.

Here's how: he used an open-source platform called Cairn, which lets you hand AI agents a starting point and a…