US Charges Russian Hacker for Facilitating Void Blizzard Cyber Espionage Campaign

**Executive Summary:** The report details the arrest and extradition of Denis Obrezko, charged with facilitating a Russia-aligned espionage campaign by the APT group Void Blizzard that has targeted at least 11 U.S. companies since April 2024 using mass email harvesting and stolen session tokens, and which Microsoft has flagged as a significant threat linked to Russian government objectives.