Microsoft says Chinese hackers gained access to US government email accounts and had access to some accounts for a month before the breach was detected (New York Times)

New York Times:
Microsoft says Chinese hackers gained access to US government email accounts and had access to some accounts for a month before the breach was detected  —  The hack, by a Chinese group that the company said was intent on conducting espionage, went undetected for a month.  —  Reporting from Washington