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U.S. Targets Russian Cyber Spies With $10M Bounty Over Messaging App Attacks

Securityaffairs.Co •Pierluigi Paganini • June 29, 2026

The U.S. offers up to $10M for information on Russian hackers targeting Signal and WhatsApp accounts of officials and journalists. The U.S. government is offering rewards of up to $10 million for information leading to the identification of members of the Russian-linked groups UNC5792 and UNC4221. The hackers target government officials, military personnel, journalists, and […]

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US Offers $10M Reward for Information on Russian Hackers Targeting Messaging Apps The US Department of State has announced a reward of up to $10 million for information on two Russian-linked hacking groups, UNC5792 and UNC4221, accused of phishing attacks on Signal and WhatsApp users. These groups are believed to be connected to Russia's FSB and military intelligence, targeting US government officials, military personnel, NATO diplomats, and journalists covering the Ukraine conflict. The hackers employ social engineering tactics, such as impersonating Signal support agents, to trick users into revealing sensitive information. Thousands of accounts have reportedly been compromised globally. The announcement follows an updated advisory from the FBI and CISA detailing new tactics used by these groups. The campaign aims to disrupt foreign cyber operations threatening US national security and critical infrastructure. 8 sources 77

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U.S. Targets Russian Cyber Spies With $10M Bounty Over Messaging App Attacks

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