Based on our investigation, we now believe that the threat actor accessed and exfiltrated data beginning in May 2023 from a small percentage of HPE mailboxes belonging to individuals in our cybersecurity, go-to-market, business segments, and other functions.
Microsoft reported last week that it also discovered an intrusion of its corporate network on Jan. 12. The Redmond, Washington, tech giant said the breach began in late November and also blamed Cozy Bear.
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