Russian government hackers carried out multiple cyber operations against Ukraine that appeared to support Moscow’s military attacks and online propaganda campaigns, Microsoft said in a report on Wednesday.

The reported intrusions – some of which have not been previously disclosed – suggest that hacking has played a bigger role in the conflict than what has been publicly known.

The digital onslaught, which Microsoft said began one year prior to Russia’s Feb. 24 invasion, may have laid the groundwork for different military missions in the war-torn territory, researchers found.

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Between Feb. 23 and April 8, Microsoft said, it observed a total of 37 Russian destructive cyberattacks inside Ukraine.

The Russian Embassy in Washington did not immediately return a message seeking comment.

Read more: jpost