The U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) on February 24, 2026, designated Russian national Sergey Sergeyevich Zelenyuk and his St. Petersburg-based company Matrix LLC operating publicly as Operation Zero, along with five associated individuals and entities, for acquiring and distributing cyber tools directly harmful to U.S. national security. This marks […] The post US Sanctions Network of Exploit Brokers That Stole US Government Cyber Tools appeared first on Cyber Security News.