Threats · 166 days ago
The UK National Cyber Security Centre (NCSC) warns that state-affiliated groups including Russia’s Star Blizzard, China’s APT31, and Iran’s IRGC are targeting personal messaging apps like WhatsApp, Messenger, and Signal. These attacks focus on high-risk individuals such as government officials, journalists, and academics. By compromising personal accounts, attackers bypass corporate messaging controls and use contact lists to pivot into sensitive networks. Techniques include malicious links, QR codes, social engineering, and impersonation within group chats. This shift means defenders must consider personal device security as part of organizational risk management.
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NCSC Issues Security Alert Over Hackers Targeting WhatsApp and Signal
The UK’s cybersecurity agency offered advice to “high-risk’ individuals” on how to protect against social engineering and cyber-attacks
NCSC warns of messaging app targeting
The NCSC has issued actions for individuals at risk of targeted attacks against messaging apps.
Part of the PlainSec briefing for 2026-04-03