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Russian hackers stole Microsoft corporate emails in month-long breach
https://www.bleepingcomputer.com/news/security/russian-hackers-stole-microsoft-corporate-emails-in-month-long-breach/
Microsoft Actions Following Attack by Nation State Actor Midnight Blizzard | MSRC Blog | Microsoft Security Response Center
https://msrc.microsoft.com/blog/2024/01/microsoft-actions-following-attack-by-nation-state-actor-midnight-blizzard/