Federal authorities have charged four men, including two officers from Russia’s spy agency, with hacking computer systems at Yahoo Inc. and stealing personal data that affected hundreds of millions of Yahoo users, in the first such case to directly target the Russian government.

Two of the men, Dmitry Dokuchaev and Igor Sushchin, are officers at Russia’s secretive Federal Security Service who protected, directed, facilitated, and…

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WSJ.com: US Business