Russian Intelligence Services (RIS) are conducting ongoing phishing campaigns targeting commercial messaging applications, as detailed in an updated PSA from CISA and the FBI. The PSA provides recent tactics, phishing message samples, and recommended mitigations for this threat. This advisory is an update to a previous warning from March 2026.
EXTERNAL Russian Intelligence Services Continue to Target Commercial Messaging Applications Publish DateJune 26, 2026 PUBLIC SERVICE ANNOUNCEMENT RELATED TOPICS: CRITICAL INFRASTRUCTURE SECURITY AND RESILIENCE , CYBERSECURITY BEST PRACTICES , INFORMATION AND COMMUNICATIONS TECHNOLOGY SUPPLY CHAIN SECURITY CISA and the Federal Bureau of Investigation (FBI) issued an updated Public Service Announcement (PSA) warning of Russian Intelligence Services (RIS) cyber threat actors targeting commercial messaging applications in ongoing phishing campaigns. This PSA is an update to the March 2026 Russian Intelligence Services Target Commercial Messaging Application Accounts and provides recent tactics, recommended mitigations, and samples of phishing messages. Tags Audience: Federal Government, Industry, State, Local, Tribal, and Territorial Government Language: English Topics: Critical Infrastructure Security and Resilience, Cybersecurity Best Practices, Information and Communications Technology Supply Chain Security Related Resources MAY 12, 2026 EXTERNAL, PUBLICATION Software Bill of Materials for AI - Minimum Elements FEB 04, 2025 EXTERNAL, PUBLICATION Guidance and Strategies to Protect Network Edge Devices JUN 02, 2026 FACT SHEET, PUBLICATION CISA and Partners Urge Hardening Automatic Tank Gauge Systems APR 29, 2026 PUBLICATION Adapting Zero Trust Principles to Operational Technology