US AI firms flag distillation attacks used by China and Russia to copy frontier models
American AI developers have alerted US authorities that foreign actors, likely from China and Russia, are using distillation techniques to replicate the capabilities of Western frontier models at much lower cost. These attacks reportedly involve buying logs of conversations from legitimate accounts to extract training data, making the practice difficult to fully stop despite lab collaboration efforts started earlier in 2026. China has denied the accusations and warned it will impose 'countermeasures' if the US uses this issue to justify restricting Chinese AI development.