Microsoft Says Hackers Linked to Russia Installed Malware on Its Systems

Microsoft Corp. said hackers, linked by U.S. authorities to Russia’s Foreign Intelligence Service, installed malicious information-stealing software on one of its systems and used information gleaned there to attack its customers. The hackers compromised a computer used by a Microsoft customer support employee that could have provided access to different types of information, including ”metadata” of accounts and billing contact information for the organization, a Microsoft spokesman said.