Phi-ter is an AI-powered real-time fraud-management system from Indian fintech company Phi Commerce. It is designed to monitor payments across cards, UPI, net banking, wallets, APIs and POS environments through a unified behavioral graph. Its four-stage detection process ingests transaction information, profiles behavior against rules and patterns, aggregates risk signals such as device, location, velocity and transaction history, and then decides whether to approve, flag or block a transaction. Phi-ter also provides explainable decisioning and investigation capabilities for fraud teams. The platform was launched as an omnichannel fraud-management solution aimed at banks, payment providers and enterprises operating high-volume digital-payment environments.