가. 당사자들의 지위 (1) 피고 코리아크레딧뷰로 주식회사(이하 ‘피고 KCB'라고 한다)는 국내 19개 은행, 신용카드사, 보험사 등 금융기관들이 공동출자하여 설립한 회사로서, 신용정보의 이용 및 보호에 관한 법률에서 정하는 신용조회 및 신용조사업무 등을 하는 회사이다.

(2) Defendant Bar Card Co., Ltd. (hereinafter “Defendant Bar Card”) is a company that issues, sells, or manages credit cards, pre-paid cards, or debit cards.

(3) The Plaintiffs are those who used or used a credit card, etc. upon entering into a contract to use additional financial services related to the use and credit settlement of the Defendant Bar Card and the credit card.

B. A development service agreement for the card accident analysis system of the Defendants (1) The card accident analysis system (hereinafter referred to as the “FDS”) is introduced by all domestic card companies as a system to detect transactions or fraudulent use as long as it is due to the theft, loss, forgery, etc. of credit cards.

According to the FDS, when it is discovered that a large amount of card use information and customer information were used based on the past accident transaction in accordance with statistical techniques, the analysis model has been made based on statistical techniques, and based on this, when it is discovered that abnormal types of transaction have occurred according to an accident pattern analyzed in the course of using credit cards, the credit card approval has been refused.

(2) After introducing FDS in around 2006, Defendant Bar Card requested A or Defendant KCB to provide services related to FDS business in order to implement a regular LDice.

B is an employee of “A” from October 2009 to April 2010, and from September 2013 to December 2013, Defendant KCB’s employee, and the said company is involved as C in the development and installation of the FDS entrusted by Defendant KCB card, and it is necessary for work in the FDS development process.