Inside the Matching Engine: How Distributed Tokenization Identifies Compromised Cards Without Exposing Them

This article explains how Group-IB’s Cyber Fraud Intelligence Platform provides non-issuing entities (e-commerce and iGaming) with privacy-preserving compromised-card intelligence derived from dark web dumps, stealer malware, and underground forums; it describes Distributed Tokenization for irreversible local tokenization, Exact and Contextual matching modes, the structured response payload for fraud operations, and integration guidance for pre-authorization workflows.