Related Threat Clusters

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…

8 articles · Updated June 29, 2026
FBI Warns of Russian Hackers Targeting Signal Backup Recovery Keys
The FBI and CISA have issued a warning regarding a phishing campaign by Russian intelligence services targeting Signal users to steal Backup Recovery Keys. This escalation allows attackers to access victims' historical…

15 articles · Updated June 26, 2026
Russian Intelligence Exploits Signal Backup Flaw, Cryptographic Fix Proposed
A critical vulnerability in Signal's backup recovery key system has been exploited by Russian intelligence agencies, specifically the FSB and GRU, allowing unauthorized access to users' message archives. The FBI and…

2 articles · Updated July 27, 2026

Recent Intelligence Reports

Signal Backup Recovery Key Flaw Exploited by Russian Spies Gets Formal Cryptographic Fix Today — Techtimes · July 27, 2026
US offers $10m reward for information on Russian hackers — Computing · June 30, 2026
U.S. Targets Russian Cyber Spies With $10M Bounty Over Messaging App Attacks — Securityaffairs.Co · June 29, 2026
US offers $10 million reward for Russian hackers targeting Signal and WhatsApp — Feeds.4Sysops · June 29, 2026
FBI says Russian spies now trick Signal users into handing over their backup recovery key — Thenextweb · June 27, 2026
FBI: Russian hackers now target Signal backup recovery keys — Bleepingcomputer · June 26, 2026
FBI: Russian hackers now target Signal backup recovery keys — Bleepingcomputer · June 26, 2026

Unc5792 Data Breach Phishing Signal France Germany Iran Russia Ukraine United States CWE-200 - Exposure of Sensitive Information Government