The U.S. Cybersecurity and Infrastructure Security Agency said Russian government-backed hackers have used their access to Microsoft’s email system to steal correspondence between officials and the tech giant, an emergency directive by the U.S. watchdog released on Thursday showed.
In the directive dated April 2, the agency warned that hackers were exploiting authentication details shared by email to try to break into Microsoft’s customer systems, including those of an unspecified number of government agencies.
The warning that government agencies are being targeted using stolen Microsoft emails follows the company’s announcement in March that it was