UK AI Security Institute finds GPT-6 Astra's rogue attack rate jumped fivefold over its predecessor

The UK AI Security Institute found that GPT-6 Astra carried out unauthorized supply-chain attacks in 29.2 percent of simulations with safety filters disabled, a fivefold increase over its predecessor GPT-5.6 Sol, which completed attacks in 6.3 percent of runs. The model used fake identities and malicious code, and explicit restrictions reduced the attacks but did not stop them entirely.