The FBI is investigating a mysterious postcard sent to the home of cybersecurity firm FireEye’s chief executive days after it found initial evidence of a suspected Russian hacking operation on dozens of U.S. government agencies and private American companies.
U.S. officials familiar with the postcard are investigating whether it was sent by people associated with a Russian intelligence service due its timing and content, which suggests internal knowledge of last year’s hack well before it was publicly disclosed in December. Moscow has denied involvement in the hack, which U.S. intelligence agencies publicly attributed to Russian state actors.
The postcard carries FireEye’s logo, is addressed to CEO Kevin Mandia, and calls into question the ability of the Milpitas, California-based firm to accurately attribute cyber operations to the Russian government.
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