「ENFORCEMENT DECREE OF THE PROTECTION OF COMMUNICATIONS SECRETS ACT」 (4) In cases of the outcomes obtained from measures restricting communications for criminal investigation, the period for preservation in the implementation of measures for preservation under paragraph (1) shall be the period the same as the period for preservation of the record of a criminal case related thereto, and in cases of the outcomes obtained from measures restricting communications for national security, the period for preservation in the implementation of measures for preservation under paragraph (1) shall be the period for protection of confidentiality classified pursuant to the Regulations on Security Affairs. Article 19 (Postponement of Notice on Implementation of Measures Restricting Communications) (1) Where a prosecutor or judicial police officer intends to obtain approval from the director of the competent district prosecutors' office (including the senior prosecutor of the competent ordinary prosecution department) in order to postpone notice on the implementation of measures restricting communications pursuant to Article 9-2 (5) of the Act, he/she shall file a written application for approval stating types, objects, the scope and the period of implemented measures restricting communications, the date he/she dealt with a case for which measures restricting communications were implemented and the outcomes thereof, grounds that he/she intends to postpone notice, etc. In such cases, the judicial police officer shall submit a document applying for approval from the director of the competent district prosecutors' office to the competent district prosecutors' office or its branch office (including the competent ordinary prosecution department). (2) The director of the competent district prosecutors' office who has received an application under paragraph (1) shall review grounds for postponement of notice, etc. and notify a prosecutor or judicial police officer of the outcomes thereof. Article 20 (Designation of Persons in Charge of Dealing with Entrusted Affairs) (1) Where the head of a communications agency, etc. is entrusted with the implementation of measures restricting communications, he/she shall designate persons in charge of dealing with such entrusted affairs. (2) Among persons in charge of dealing with entrusted affairs under paragraph (1), persons in charge of dealing with entrusted affairs of measures restricting communications for national security under Article 7 of the Act shall be only persons granted access to Class II classified information, and the number of persons designated shall be kept to the minimum necessary. 법제처 9 국가법령정보센터