three months after the date this Act enters into force. Article 4 (Transitional Measures concerning Penalty Provisions) The previous provisions shall apply to the imposition of penalty provisions for acts committed before this Act enters into force. ADDENDA <Act No. 6626, Jan. 26, 2002> Article 1 (Enforcement Date) This Act shall enter into force on July 1, 2002. Articles 2 through 7 Omitted. ADDENDA <Act No. 7138, Jan. 29, 2004> (1) (Enforcement Date) This Act shall enter into force on the date of its promulgation: Provided, That the amended provisions of Article 10-3 shall enter into force six months after the date of its promulgation. (2) (Transitional Measures) A person who engages in the business of detecting illegal wiretapping equipment as at the time this Act enters into force shall file for registration under the amended provisions of Article 103 within six months from the date this Act enters into force. ADDENDUM <Act No. 7371, Jan. 27, 2005> This Act shall enter into force on the date of its promulgation. ADDENDA <Act No. 7428, Mar. 31, 2005> Article 1 (Enforcement Date) This Act shall enter into force one year after the date of its promulgation. Articles 2 through 6 Omitted. ADDENDUM <Act No. 7503, May 26, 2005> This Act shall enter into force three months after the date of its promulgation. ADDENDA <Act No. 8728, Dec. 21, 2007> Article 1 (Enforcement Date)