Security Service "President Yoon's personal phone is not related to security."

Kim Sung-hoon, deputy chief of the Presidential Security Service, said he believes that if Yoon Suk Yeol had used a private phone, he would have talked about things that were not related to security.

Deputy Director Kim responded to the criticism that North Korea's eavesdropping on the president's personal mobile phone at the plenary session of the National Assembly's Legislation and Judiciary Committee.

He also explained that President Yoon would have made a personal call to former Defense Minister Lee Jong-seop, who was on a business trip to Uzbekistan, on his personal phone last year.