Anthropic warns China’s GLM-5.3 open model poses serious cyberattack risk
Anthropic said China’s GLM-5.3 open model can be bypassed easily enough to raise serious cyberattack risk, while U.S. testing placed it among the strongest open-weight models evaluated for cyber exploit work. The two reports together frame GLM-5.3 as an open model that can generate working exploits in repeated tests and has prompted calls for tighter cyber-risk oversight.
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Developers and users of open-weight AI models are the clearest group affected right now, because GLM-5.3 was described as able to produce working exploits and as having safety features that could be bypassed. That makes the model’s cyber capability visible to anyone watching open-model releases, including teams tracking misuse and regulators focused on cyber risk.
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