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Sturnus Malware Compromises Encryption of Major Messaging Apps

First seen 2 Dec 2025, 18:33 UTC • •

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ThreatCluster •March 12, 2026 at 13:27 UTC

Hackers have successfully bypassed the end-to-end encryption of popular messaging apps Signal, Telegram, and WhatsApp using a new malware known as Sturnus. This vulnerability affects all users of these secure messaging platforms, raising significant concerns about the privacy of their communications.

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