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Researcher poisons open-weight AI model for under $100

ID: 3f4fb1f4-cb8f-54da-9e7f-a384eb977ab9

STIX ID: report--3f4fb1f4-cb8f-54da-9e7f-a384eb977ab9

Feed Name: The Register (Security)

Threat Score
60/100

Date Published: 2026-07-16

Date Updated: 2026-07-23

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A researcher demonstrated that open-weight AI models can be poisoned quickly and cheaply (under $100 and ~10 examples) to introduce backdoors enabling remote code execution and covert data exfiltration, highlighting a broader AI supply-chain and observability risk where compromised model weights can behave maliciously without obvious signs.

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