1. The judgment of the court of first instance is modified as follows.

On December 11, 2017, the Seoul Central District Court against the Defendants’ Plaintiff.

1. Basic facts

A. Status 1 of the parties related to VN services refers to a series of settlement agency services providing credit card inquiries and approval services by connecting relay communications networks between a credit card merchant and a credit card company, as well as providing additional services, such as credit card service details, transmission of credit sales slips, and purchase of sales slips. VN is a summary of value-added telecommunications networks under the Telecommunications Business Act. A company that mainly provides services is a company that concludes a contract on the settlement of accounts with credit card companies for the provision of credit card inquiries and approval services and automatic transfer services with credit card companies, and that is comprised of fees for the provision of credit card brokerage services and automatic transfer services with credit card companies, and DDC (Dat & D) services that are processed by VN companies based on the Dat data on the transaction approval of credit card companies, the credit card company provides sales slips using the sales slip services that enable VN companies to deposit credit card companies after deducting fees from the credit card companies designated by the chain companies.

hereinafter referred to as “VN commission”

) A VN service provider receiving VN (hereinafter referred to as “VN service provider”)

2) On August 31, 2006, G and H G comprehensively transferred sales slips collection, storage, and verification (DC services; hereinafter “DC services”) among DC services conducted under a contract with credit card companies to H on a comprehensive basis. G and H were operators of VN parent agencies (hereinafter “parent agencies”).

(2).