A Single Hacker Used AI Agents to Break Into Over 100 Sites
A hacker breached more than 100 websites using an automated system built on Cairn, an open-source AI platform that describes itself as a general-purpose problem-solving engine, according to findings by AI security firm Norforge — as reported by The Verge.
With Cairn, a user sets a start and end point; AI agents handle the steps in between. The hacker weaponised that structure for cyberattacks, leaving the agents to do most of the work while they stayed largely hands-off.
Among the confirmed targets: John Deere, SharkNinja, and Cummins. The hacker — the most active of more than 20 likely-malicious Cairn instances Norforge identified — targeted companies across the US, Canada, Australia, and Japan. Successful breaches took roughly 23 hours each. The attacker's instructions reportedly ran to fewer than 100 Chinese characters.
The companies are downplaying the damage. John Deere says there is no indication sensitive data was accessed. SharkNinja says the breach hit a standalone product-support site and has been contained. Cummins says it is investigating a potential attack on a third-party vendor's site.
Cairn's creator has said the platform "was never a hacking tool" and that misuse is a human decision. That is probably true — and completely beside the point. When a general-purpose AI system can be pointed at 100 targets and told to figure out the rest, the blast radius of one motivated attacker gets a lot wider.
Watch for follow-up from Norforge on how many of the 20-plus malicious instances have been shut down. That number matters more than any company statement.
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