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Data Breach Exposes Client Information at Major U.S. Banks

Data Breach Exposes Client Information at Major U.S. Banks

First seen 24 Nov 2025, 21:26 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

A cyberattack on SitusAMC, a mortgage technology vendor, has led to the exposure of client data from major U.S. banks including JPMorgan, Citi, and Morgan Stanley. The breach involved unauthorized access to systems at SitusAMC, resulting in the exfiltration of sensitive data such as accounting records and legal agreements.

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