State-Sponsored Phishing Campaign Targets Signal Users
ID: c7d9d1ab-3010-5470-9d17-3f25898897e3
STIX ID: report--c7d9d1ab-3010-5470-9d17-3f25898897e3
Feed Name: ThreatCluster
Threat Score
On April 22, 2026, German authorities (BSI and BfV) reported an active, likely state-sponsored phishing campaign targeting high-profile individuals via the Signal messaging app; the campaign exploits messaging-service vulnerabilities to access private communications and group chats, and agencies have published guidance advising immediate protective actions (change PINs, enable two-factor authentication) and mitigation steps for potential victims.
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