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

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

First seen 2 Dec 2025, 18:33 UTC • •

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

A cyberattack on mortgage technology vendor SitusAMC 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 theft of sensitive data such as accounting records and legal agreements. Ethereum co-founder Vitalik Buterin commented on the incident, emphasizing the importance of privacy as a fundamental practice.

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