Threats & Adversaries · Credential Theft
Russian Hackers Seize Messaging Accounts of US Officials FBI and CISA say Russian-linked actors impersonated Signal and WhatsApp support accounts to steal verification codes and seize thousands of accounts. Victims include US government officials, military personnel, politicians, and journalists. Government, defense, and media sectors are affected.
6 sources · Mar 23
Timeline Sources Mar 23 The Record from Recorded Future
FBI warns of Russian, Iranian cyber activity involving messaging platforms
The FBI issued warnings about separate Russian and Iranian cyber campaigns involving social media messaging platforms like Signal and Telegram.
original Mar 23 Help Net Security
Russian hackers go after high-value targets through Signal - Help Net Security
Russian intelligence-linked hackers are targeting commercial messaging platforms, with Signal a primary focus, the FBI and CISA warn.
original Mar 21 The Hacker News
FBI Warns Russian Hackers Target Signal, WhatsApp in Mass Phishing Attacks
Russian-linked phishing hits thousands of messaging accounts via fake support tactics, enabling impersonation and data access.
original Part of the PlainSec briefing for 2026-03-25
Every edition of this story: Russian Hackers Seize Messaging Accounts of US Officials
More from today Threats & Adversaries · Credential Theft
Russian Hackers Seize Messaging Accounts of US Officials FBI and CISA say Russian-linked actors impersonated Signal and WhatsApp support accounts to steal verification codes and seize thousands of accounts. Victims include US government officials, military personnel, politicians, and journalists. Government, defense, and media sectors are affected.
6 sources · Mar 23
Timeline Sources Mar 23 The Record from Recorded Future
FBI warns of Russian, Iranian cyber activity involving messaging platforms
The FBI issued warnings about separate Russian and Iranian cyber campaigns involving social media messaging platforms like Signal and Telegram.
original Mar 23 Help Net Security
Russian hackers go after high-value targets through Signal - Help Net Security
Russian intelligence-linked hackers are targeting commercial messaging platforms, with Signal a primary focus, the FBI and CISA warn.
original Mar 21 The Hacker News
FBI Warns Russian Hackers Target Signal, WhatsApp in Mass Phishing Attacks
Russian-linked phishing hits thousands of messaging accounts via fake support tactics, enabling impersonation and data access.
original Part of the PlainSec briefing for 2026-03-25
Every edition of this story: Russian Hackers Seize Messaging Accounts of US Officials
More from today