ResearchBuzz: FirehoseReuters: Cyber actors linked to Russia targeting users of messaging apps, FBI says. “Hackers tied to the Russian intelligence services are targeting users of consumer messaging applications such as Signal, the FBI and U.S. cyber defense agency CISA said on Friday.”
https://rbfirehose.com/2026/03/21/reuters-cyber-actors-linked-to-russia-targeting-users-of-messaging-apps-fbi-says/