86 Laws of Malaysia Act 574 (d) creates a serious risk to the health or the safety of the public or a section of the public; (e) involves serious damage to property; (f) involves the use of firearms, explosives or other lethal devices; (g) involves releasing into the environment or any part of the environment or distributing or exposing the public or a section of the public to— (i) any dangerous, hazardous, radioactive or harmful substance; (ii) any toxic chemical; or (iii) any microbial or other biological agent or toxin; (h) is designed or intended to disrupt or seriously interfere with, any computer systems or the provision of any services directly related to communications infrastructure, banking or financial services, utilities, transportation or other essential infrastructure; (i) is designed or intended to disrupt, or seriously interfere with, the provision of essential emergency services such as police, civil defence or medical services; (j) involves prejudice to national security or public safety; (k) involves any combination of any of the acts specified in paragraphs (a) to (j), and includes any act or omission constituting an offence under the Aviation Offences Act 1984 [Act 307]. (4) An act or threat of action falls within this subsection if it— (a) is advocacy, protest, dissent or industrial action; and