A Hacking Competition Shows the Power of China’s ‘Open Weight’ A.I.

The winner of an elite cybersecurity contest prevailed by relying on a free Chinese model — another sign that available A.I. systems could already be too powerful to easily regulate.Pavel Gurvich, the chief executive of the cybersecurity company Tenzai. Mr. Gurvich’s firm won the HackerOne contest by using a freely available Chinese A.I. model.