A Russian hacking group recognized within the cybersecurity trade as Nobelium, or Midnight Blizzard, used a “password spray assault” beginning in Nov. 2023 to breach a Microsoft platform, the corporate stated in a weblog. Hackers use this system to infiltrate an organization’s methods through the use of the identical password throughout a number of accounts.
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The Russian group was capable of entry “a really small share” of Microsoft company electronic mail accounts, together with members of its senior management crew and staff in its cybersecurity, authorized, and different features, stated Microsoft.
Microsoft’s risk analysis crew routinely investigates nation-state hackers equivalent to Midnight Blizzard, and the corporate stated its probe into the newest breach indicated the hackers had been initially concentrating on electronic mail accounts that had details about Midnight Blizzard.
The Russian Embassy in Washington and Ministry of Overseas Affairs didn’t instantly reply to a request for remark.
Microsoft stated it investigated the incident and disrupted the malicious exercise, blocking the risk actor’s entry to its methods.