The book provides a detailed description of the security policy at all stages of the life cycle of a bank card - from the workshop where the plastic blank of the future card is made, to the trade and service area where the card is accepted for payment. The international standards PSI DSS and the practice of their application are considered separately. A classification of card risks is given, and a methodology for assessing the issuer's risks using monitoring of card transactions is outlined. The types of card fraud and methods of preventing it are described in detail. Separate chapters are devoted to claims work on transactions with bank cards and ensuring the security of the processing center. The current Russian legislation is analyzed, judicial practice is outlined with a detailed description of criminal cases related to card fraud that have been brought to court. General recommendations are given on the information security of the bank's corporate system as the foundation for the security of the card business. The book is aimed at employees of card divisions, information security departments of commercial banks, specialists of processing centers, law enforcement agencies involved in criminal cases of card fraud, management personnel of supermarkets, and other trade organizations, students of financial universities.