A look at China's alleged hack of Microsoft Exchange, which both US officials and Microsoft believe was in the service of China's AI ambitions (Dina Temple-Raston/NPR)

Dina Temple-Raston / NPR:
A look at China's alleged hack of Microsoft Exchange, which both US officials and Microsoft believe was in the service of China's AI ambitions  —  Steven Adair hunts hackers for a living.  Back in January, in a corner-of-his-eye, peripheral kind of way, he thought he saw one in his customer's networks …