(1) Subject to section 13, a person shall not, knowingly and without lawful authority, do any act which causes, directly or indirectly—
(a) a degradation, failure, interruption or interference or obstruction of the operation of a computer system;
(b) a denial of access to, or impairment of any program or data stored in, the computer system;
(c) the data to be meaningless, useless or ineffective;
(d) an obstruction, interruption, or interference with any person in the lawful use of data; or
(e) the destruction or alteration of data.
(2) A person who contravenes subsection (1) commits an offence and is liable on summary conviction to a fine not exceeding $50,000 or to imprisonment for a term not exceeding 18 months or both and in the case of a subsequent conviction, to a fine not exceeding $100,000 or to imprisonment for a term not exceeding 3 years or both.
(3) Subsection (1) applies whether the person's act has a temporary or permanent effect.