In the electronic financial transactions, so-called voice phishing scam are frequently encountered in which financial transaction information such as users IDs, passwords, and an accredited certificates are used without permission by others to receive loans or receive payments. In such a case, between whom the name of the transaction and the bank which received an unauthorized payment orders using other’s ID, password and the accredited certificate, who is responsible for the damages incurred and to whom the legal effects of such financial transactions belongs? In this regard, Article 7 of the Electronic Documents and the Framework Act on Electronic Transactions (abbreviated as the Electronic Documents Act) contains the provisions concerning the subjects of the attribution of the electronic documents. This provision allows judging the issue of the attribution of intentions in electronic financial transactions made without permission by the use of others names. In other words, Article 7 (2) 2 of the Electronic Documents Act states that ‘In any of the following cases, an addressee of an electronic document may do an act, deeming an expression of intent contained in the electronic document to be the expression of intent of an originator: 2. Where an electronic document received has been sent by a person who is deemed by the addressee to have sent such electronic document according to the intent of the originator or his/her agent, in view of his/her relationship with the originator or his/her agent.‘ In this case, the Supreme Court said that in the case of passing financial information of the user by voice phishing scam, re-issued the accredited certificate, and using it to intercept the loan, there was a reason, the ruling admitted to the application of Article 7 (2) 2 of the Electronic Documents Act(Supreme Court Decision 2017da257395 decided March 29, 2018). Electronic banking transactions are being concluded rapidly in large quantities, and the (re) issuance of accredited certificates is considered to be appropriate for the Supreme Court s judgment considering that the accredited certification body is carried out through a certain procedure and considering the safety of transactions. However, this aspect should be considered together in order to reinforce the identity verification step in the process of issuing accredited certificates and to strictly comply with the security system for electronic financial transaction providers.