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Microsoft Corp. said Friday a Russian hacking group illegally gained access to some of its top executives’ email accounts.
In a regulatory filing, the software giant
MSFT,
said a group called Nobelium was responsible for the attack.
In late November, the group accessed “a legacy non-production test tenant account and [gained] a foothold, and then used the account’s permissions to access a very small percentage of Microsoft corporate email accounts, including members of our senior leadership team and employees in our cybersecurity, legal, and other functions, and exfiltrated some emails and attached documents,” Microsoft’s Security Response Center wrote in a blog post.
Microsoft’s senior leadership team, which includes Chief Financial Officer Amy Hood and President Brad Smith, routinely meets with Chief Executive Satya Nadella.
The company reported that there were no signs Nobelium had obtained customer data, production systems or proprietary source code.
Nobelium, also known as APT29 or Cozy Bear, is a shadowy hacking group that attempted to crack the systems of the U.S. Defense Department and did breach the Democratic National Committee’s systems in 2016.
Microsoft’s disclosure comes amid new U.S. requirements to report cybersecurity incidents.
Microsoft was not immediately available for comment.
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