MuddyWater Hackers Suspected of Targeting Israeli Organizations With Fake Tax Authority Emails

Israeli organizations have been targeted since September 2026 in a phishing campaign impersonating the Israel Tax Authority and distributing SimpleHelp remote monitoring and management software disguised as tax documents. Investigators suspect MuddyWater involvement, citing the targeting and its documented abuse of legitimate remote-access tools, but the attribution remains unconfirmed. Rather than exploiting software vulnerabilities, the […]

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