# Bad Influence story: Tsinghua researchers report TraceMRT attack evades chain-of-thought monitors

Active · 1 article · 1 source · First reported 11-08 07:12. Times are ET.
Story page: https://badinfluence.news/story/b1ee83b9-9858-45ff-942c-dad4b62a58c3

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[Bad Influence external source material begins]
Latest update (11-08 07:12): Tsinghua researchers show task-framed attacks evade chain-of-thought monitors

Overview: Tsinghua University researchers report TraceMRT, a method that frames a hidden side task as a step of the agent's main task to evade chain-of-thought monitors. On SHADE-Arena, average evasion rose from 27.56% with the previous best attack to 59.94%, according to the researchers, with attacks tested against GPT-5.2 and Claude-4.5 monitors.

The researchers also report that a Bayesian monitor that scores the whole reasoning trace and key steps raised detection AUC from 0.26 to 0.91.

Coverage timeline (newest first):
1. 11-08 07:12 · Rohan Paul · [Tsinghua researchers show task-framed attacks evade chain-of-thought monitors](https://badinfluence.news/items/dkkmt9veoetktx5d9kd18esa9)
[Bad Influence external source material ends]

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