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Incident 1766: Cybercriminal Reportedly Used Cairn AI Agents to Breach More Than 100 Company Websites

Description: An operator using Chinese-language instructions reportedly directed Cairn, an AI agent framework, to breach more than 100 company websites. The campaign targeted sites in the U.S., Canada, Australia, and Japan. Researchers verified unauthorized access tools on victim servers. Reuters identified websites belonging to farm equipment maker Deere and appliance maker SharkNinja; the extent of data theft remained unclear.

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Alleged: le1xia0 , Large language model developers , DeepSeek and AI agent system developers developed an AI system deployed by hackers , Cybercriminals , AIA0001 and AI agent system deployers, which harmed SharkNinja , Privacy , Information security , Deere , Cummins and Companies.
Alleged implicated AI systems: Large language models , Cairn AI agent framework and AI agent systems

Incident Stats

Incident ID
1766
Report Count
2
Incident Date
2026-09-25
Editors
Daniel Atherton

Incident Reports

Reports Timeline

Incident Occurrence+1
How one hacker used AI agents and a few thousand dollars to break into scores of sites
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How one hacker used AI agents and a few thousand dollars to break into scores of sites

How one hacker used AI agents and a few thousand dollars to break into scores of sites

reuters.com

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Inside Cairn: Open Windows into massive AI-Driven Cyber Operations

Inside Cairn: Open Windows into massive AI-Driven Cyber Operations

norforge.com

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How one hacker used AI agents and a few thousand dollars to break into scores of sites
reuters.com · 2026

WASHINGTON, Oct 19 (Reuters) - Over the past couple of weeks, a cybersecurity researcher watched as a Chinese-speaking hacker broke into websites belonging to more than 100 companies, including farm equipment maker Deere (DE.N), home applia…

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Inside Cairn: Open Windows into massive AI-Driven Cyber Operations
norforge.com · 2026

More than 20 exposed Cairn panels give an unusually detailed view of how threat actors select targets, direct autonomous agents, exploit vulnerabilities, and establish persistent access to compromised systems.

01 TL;DR

An investigation by N…

Variants

A "variant" is an AI incident similar to a known case—it has the same causes, harms, and AI system. Instead of listing it separately, we group it under the first reported incident. Unlike other incidents, variants do not need to have been reported outside the AIID. Learn more from the research paper.
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