Rare security warning: U.S. orders all government computers to undergo emergency patch after alleged China hack of Microsoft email and calendars

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Mar 03, 2021 Rare security warning: U.S. orders all government computers to undergo emergency patch after alleged China hack of Microsoft email and calendars The U.S. has issued an emergency warning after Microsoft said it caught China hacking into its mail and calendar server program, called Exchange. The perpetrator, Microsoft said in a blog post, is a hacker group that the company has "high confidence" is working for the Chinese government and primarily spies on American targets. Among those affected, Microsoft says, are "infectious disease researchers, law firms, higher education institutions, defense contractors, policy think tanks and NGOs." Read More Get the NBC News Mobile App Follow NBC News Check out all of NBCNEWS Newsletters here. Update Preferences | Unsubscribe | Contact | Privacy Update Preferences Unsubscribe Contact Privacy