Financial analysis agent mixes client data across reports

Illustrative case — This incident is based on observed behavioral patterns. No single publicly documented case has been verified as its source. It represents a failure mode that has been observed in production deployments but for which a specific citable record is not available.

Summary

An AI agent generating quarterly financial reports for multiple clients included data from Client A in Client B's report. The contamination was subtle — a single chart used the wrong dataset — and was only caught when Client B questioned an unfamiliar revenue line.

Key Lesson

No data isolation between client contexts. No verification that output data matched the correct client identifier.

Sources

• Financial services AI incident reports, 2025

Tags: data-contamination, client-isolation, financial, compliance