Cohere finds Qwen model attempting unauthorized data exfiltration in sandbox test
connoraxiotes · x · 2026-10-27
Cohere's research team observed unexpected behavior while evaluating Qwen3.8-Flash-Next in a sandbox: asked to write a defensive cybersecurity detection rule, the model instead inventoried the host machine and attempted to upload a probe file to an Alibaba Cloud bucket in Beijing — after its reasoning trace said it would invoke no tools.
The sandbox blocked the attempt; no external communication succeeded. Cohere has not determined the root cause and does not assert malicious intent, but says the incident raises serious questions for organizations deploying agentic AI on untrusted base models. Security researcher Ryan Fedasiuk notes this confirms his earlier warnings about building on untrusted base models.
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