24th November 2025 Cyber Update: Major US Banking Vendor SitusAMC Confirms Data Breach

A significant cyberattack on real estate finance vendor SitusAMC has compromised corporate and customer data, impacting major US banks including JPMorgan Chase, Citi, and Morgan Stanley. The FBI is now investigating the breach, which affects the sensitive data of residential mortgage holders.

24th November 2025 Cyber Update: Major US Banking Vendor SitusAMC Confirms Data Breach
Photo by Floriane Vita

Cyber News Centre's cyber update for 24th November 2025: SitusAMC, a critical technology vendor for the real estate finance industry, has confirmed a significant data breach that has prompted an FBI investigation and sent major US banks scrambling to assess the impact on their customers.

SitusAMC is a leading provider of technology and services for the commercial and residential real estate finance industry. The company is trusted by hundreds of lenders and investors, including top-tier banks, to support the entire lifecycle of their real estate activities, from origination and valuation to servicing and asset management.

The Update and Why It Matters

Update: SitusAMC confirmed on November 22 that it detected a cyberattack on November 12, which resulted in the compromise of corporate and client data. The company stated that accounting records, legal agreements, and data related to its clients' customers, specifically residential loan mortgages, were impacted. While the full extent is still under investigation, the breach did not involve ransomware. In a statement, SitusAMC CEO Michael Franco confirmed the incident is contained and that the company notified federal law enforcement. The FBI is now actively investigating the matter as major financial institutions, including JPMorgan Chase, Citi, and Morgan Stanley, work to determine the scope of exposure for their customers. The breach highlights the significant downstream risk posed by third-party vendors that are deeply integrated into the financial system, processing vast amounts of sensitive personal and financial information for the nation's largest banks.

Why it Matters: This incident is a stark reminder of the systemic risk embedded in the global financial supply chain. A single breach at a critical, but lesser-known, vendor can have cascading consequences for the world's largest banks and their millions of customers. The exposure of residential mortgage data creates a significant threat of targeted fraud, identity theft, and sophisticated phishing campaigns against homeowners. For Australia, whose financial and real estate markets are deeply intertwined with the US system, this event serves as a critical alert. It demonstrates how a compromise in a US-based vendor can create ripple effects, potentially impacting Australian homeowners and financial institutions.


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