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The nation-state hackers who orchestrated the SolarWinds supply chain attack compromised a Microsoft worker’s computer and used the access to launch targeted attacks against company customers, Microsoft said in a terse statement published late on a Friday afternoon.
The hacking group also compromised three entities using password-spraying and brute-force techniques, which gain unauthorized access to accounts by bombarding login servers with large numbers of login guesses. With the exception of the three undisclosed entities, Microsoft said, the password-spraying campaign was “mostly unsuccessful.” Microsoft has since notified all targets, whether attacks were successful or not.
Enter Nobelium
The discoveries came in Microsoft’s continued investigation into Nobelium, Microsoft’s name for the sophisticated hacking group that used SolarWinds software updates and other means to compromise networks belonging to nine US agencies and 100 private companies. The federal government has said Nobelium is part of the Russian government’s Federal Security Service.
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