Abstract: Each service system with a variety of databases in marketing environment maintains and audits purchasing transaction data to look for ID theft and transmits suspicion events to security service system which is attached to marketing environment. Security service system maintains status data and identifies information including biometric identity, portable device identity, and message to defeat ID-theft attacking. Identifying events is transmitted to service systems for derived information to reflect operation. Services systems include Insures Service Systems, Bank Service Systems, Business Service Systems, and Portable Devices under Security Service Systems monitoring in marketing environment. And also a portable device with a local CPU, memory, I/O interface, wireless network and a host interface provides user for purchasing transaction with merchant.