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1.(a)
Defendant A and F Co., Ltd. are each of the plaintiffs listed in the separate sheet Nos. 1, 100,000 and each of them.
Reasons
1. Basic facts
A. The status of the parties, etc. 1) Defendant A, C, and D are companies engaged in businesses such as credit cards, pre-paid cards, debit cards, and issuance, sale, and management of debit cards. Defendant F is a company established by financial institutions through joint investment, and the Use and Protection of Credit Information Act (hereinafter “Credit Information Act”).
(2) Each of the Plaintiffs listed in [Attachment 1 and 4 shall be the persons who used or used a credit card, etc. upon entering into a contract for the use and financial transaction with Defendant A, C, or D and having been under the credit card, etc.
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 transactions or fraudulent use due to the theft, loss, forgery, etc. of credit cards.
According to the FDS, a large amount of card use information and customer information based on the past accident transactions created an analysis model in accordance with statistical techniques, based on this, and based on this, the card company will take measures such as refusing to grant credit card approval if the credit card is discovered due to any abnormal type of transaction according to an accident pattern analyzed in the course of using the credit card.
C. Defendant A entered into a contract for the development of FDS and a contract for the purchase of FDS business with Defendant F on January 30, 2013, following the introduction of FDS for the first time around 2008.
B. The development personnel of Defendant F, including G, who is the general manager of the project, engaged in the development of FDS from February 2, 2013 to August 2013. Among them, ① from February 2013 to March 2013, Defendant A I head office located in Jongno-gu Seoul, Jongno-gu, Seoul, and ② from March 2013 to August 2013, Seoul.