Attached 2-1 Action against Plaintiffs and Defendant A Co., Ltd. listed in the Plaintiff’s List;

(b) Attached Form 3-1.

A. Defendant A Co., Ltd. (hereinafter “Defendant A”), Defendant B Co., Ltd. (hereinafter “Defendant B”), and Defendant C Co., Ltd. (hereinafter “Defendant C”) are corporations engaged in the business of issuing, selling, and managing credit cards, pre-paid cards, or debit cards. The Plaintiffs are those who used, or used credit cards, etc. upon entering into a contract with one or three companies among the Defendants.

B. The concept of the card accident analysis system and the introduction card accident analysis system (hereinafter “FDS”) are introduced by all domestic credit card companies as a system to detect abnormal or fraudulent use due to theft, loss, forgery, etc. of credit cards. According to FDS, an analysis model is made based on statistical methods using mass card use information and pertinent customer information based on the past accident transaction and based on this, if it is discovered that abnormal type of transaction has occurred according to the statistical analysis pattern of the credit card when using the credit card.

C. Defendant A’s credit card leakage 1) entered into a FDS development service contract and provision of credit card customer information (A) Defendant A entered into a contract with E Co., Ltd. (hereinafter “E”) on January 30, 2013 with a contract amount of KRW 227,419,500, and within seven months from the date of the delivery due date, after introducing FDS for the first time in around 2008.

B. The development personnel of E, including F, who are the general manager of the project, were put into Defendant A from February 2013 to August 2013 and started the FDS development work. ① From February 2013 to March 2013, it is necessary to consult and define the claims management division and work requirements of Defendant A and to define them, and is located in Jongno-gu Seoul Metropolitan Government G.