The defendant's appeal is dismissed.

1. Summary of grounds for appeal;

가. 사실오인 1) 이메일 발송에 관하여 피고인이 2012. 11. 14.경 E에게 이 사건 공소사실 기재와 같은 이메일을 보낸 것은 사실이나, 위 이메일은 발신인이 “A(피고인)”으로 명시되어 있어 그 수신인인 E이 착오를 일으킬 리 없고, 그 내용은 담당자였던 피고인이 퇴사한 것을 통지하려는 취지였으며, 위 이메일의 말미에 “(주)D”라고 기재된 것은 피고인이 위 회사에 재직할 당시 자동적으로 이메일의 말미에 추가되도록 한 “꼬릿말 서비스”에 의한 것일 뿐으로, 피고인에게는 피해자 주식회사 D(이하 ‘피해자 회사’라고 한다

(2) There was no criminal intent to interfere with the business of the Defendant regarding the sending of text messages, which is the same as the indicated in the instant facts charged, but it was not sent on November 15, 2012 as indicated in the instant facts charged, but on November 14, 2012, prior to the first examination result, prior to the Defendant’s receipt of the said text messages, and C, the representative of the victim company, takes custody of the said text messages from the Defendant, thereby creating it by changing the sender to C.

B. The lower court’s sentence of unreasonable sentencing (the fine of KRW 500,000) is too unreasonable.

2. Judgment on the assertion of mistake of facts

A. According to the evidence duly admitted and examined by the court below, the above e-mail does not purport to inform the Defendant of the fact that the Defendant retired from the victim company as an individual to the examination institution, but also expresses the victim company’s position that the victim company became unable to perform the pertinent task any longer, and in light of the fact that the Defendant retired from the victim company was sent to the victim company by tending the content of the above e-mail, which is the position of the victim company.