President Trump is shifting from discussion of the long-lasting competition among the world’s biggest economies and nuclear powers.

© Haiyun Jiang/The New York Times

President Trump is shifting from discussion of the long-lasting competition among the world’s biggest economies and nuclear powers.

The company claimed that A.I. did most of the hacking with limited human input and said it was a rapid escalation of the technology’s use in cybercrime.

China has penetrated networks that control infrastructure systems and has hacked telecommunications companies.