Hack Blamed on Wagner Group Had Another Culprit, Experts Say

Joe Stewart, director of malware research at Dell SecureWorks, a unit of Dell Inc., speaks to a colleague in front of a pair of large wall mounted monitors in his office in Myrtle Beach, South Carolina, U.S., Friday, Jan. 18, 2013. Stewart, 42, spends his days hunting for Internet spies. Photographer: Stephen Morton

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