FBI and CISA Warn of Russian Phishing Campaigns Targeting Messaging Apps

The FBI and U.S. Cybersecurity and Infrastructure Security Agency (CISA) reported that Russian Intelligence Services-affiliated threat actors are conducting phishing campaigns targeting commercial messaging applications (CMAs) such as WhatsApp and Signal. These attacks aim to compromise accounts belonging to individuals with high intelligence value. The warning was issued on a Friday, though no specific date in 2026 was provided. The campaigns are designed to seize control of targeted accounts, though no technical details like CVE IDs or exact attack vectors were disclosed. The primary impact involves unauthorized access to sensitive communications of high-value individuals.