Microsoft has said that Russian threat actors are attempting to penetrate critical internet infrastructure.

Microsoft has said that known Russian threat actors have begun to attack critical interne infrastructure with the aim of establishing long term control of those systems. The report from Microsoft outlined how these attacks have been on going from several years. They also said that the groups have targeted US and UK systems in particular.

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https://www.securityweek.com/russian-seashell-blizzard-hackers-gain-maintain-access-to-high-value-targets-microsoft/