Early Tuesday, Microsoft announced that last week it seized control of six domains owned by the Russian hacking group Fancy Bear, also known as APT28. The hackers had used the sites to mount midterm election-related phishing campaigns, similar to those Fancy Bear launched during the 2016 United States election season. It's the most prominent, publicly known effort to proactively identify and thwart Russian election hacking efforts—and Microsoft's in a unique position to pull it off.

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