The Silent Data Bleed: How Kestrel Financial Rebuilt Its AI Anomaly Detection Pipeline After Multi-Tenant Inference Endpoints Exposed Customer Context Across Sessions

In early 2026, the engineering team at Kestrel Financial, a mid-size fintech serving roughly 340,000 retail and SMB customers across North America, made a discovery that stopped their roadmap cold. Their flagship AI-powered transaction anomaly detection system, which had been praised internally for its precision and speed, was silently