(1) No one shall intrude on an information and communications network without a rightful authority for access or beyond a permitted authority for access.
(2) No one shall damage, destroy, alter, or forge an information and communications system, data, program, or similar without good cause, nor shall he or she convey or spread a program that is likely to interrupt operation of such system, data, program, or similar (hereinafter referred to as "malicious program").
(3) No one shall cause a trouble to an information and communications network to interfere with stable operation of the information and communications network by sending a large amount of signals or data, letting the network process an illegitimate order, or doing the similar actions.
(4) No person shall install a program or technical device that enables access to the information and communication network circumventing the normal protection and authentication procedures of the information and communication network without good cause on the information and communication network or the information system related to the information and communication network, or deliver or distribute it. < Added on Jan. 23, 2024>[This Article Wholly Amended on Jun. 13, 2008]