US accuses China of Microsoft hack Posted : 2021-07-20 11:44 Updated : 2021-07-20 11:44 In this Aug. 7, 2020, file photo, a man looks at his smartphone as he walks by the Microsoft office in Beijing. The Biden administration on July 19 blamed China for a hack of Microsoft Exchange email server software that compromised tens of thousands of computers around the world earlier this year. AP-Yonhap The United States on Monday accused Beijing of carrying out a massive hack of Microsoft and charged four Chinese nationals as it rallied allies in rare joint condemnation of "malicious" cyber activity from China. In comments likely to further strain worsening relations between Washington and Beijing, U.S. Secretary of State Antony Blinken said that the March hack of Microsoft Exchange, a top email server for corporations around the world, was part of a "pattern of irresponsible, disruptive and destabilizing behavior in cyberspace, which poses a major threat to our economic and national security."