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Warner Wants Russia Probe to Delve Deeper With Tech Companies

Senator Mark Warner

Senator Mark Warner

Photographer: Zach Gibson/Bloomberg

Senator Mark Warner said he’s not finished pressing the technology companies whose networks were exploited by Russia during the 2016 presidential campaign and beyond.

The Democratic vice chairman of the Senate Intelligence Committee has been the leading lawmaker pressing Facebook Inc., Twitter Inc. and Alphabet Inc.’s Google to search their archives for evidence of Russian interference and collusion, and to harden their networks against a continuing effort to interfere in elections in the U.S. and its allies.