8 No. 21 Prevention of Terrorism (f) involves releasing into the environment or any part of it or distributing or exposing the public or any part of it to(i) any dangerous, hazardous, radioactive or harmful substance; (ii) any toxic chemical; (iii) any microbial or other biological agent or toxin; (g) is designed or intended to disrupt any computer system or the provision of services directly related to communications infrastructure, banking or financial services, utilities, transportation or other essential infrastructure; .. (h) is designed or intended to disrupt the provision of essential emergency services such as police, civil defence or medical services; (i) involves prejudice to national security or public safety, and is intended, or by its nature and context, may reasonably be regarded as being intended to(i) intimidate the public or a section of the public; (ii) compel the Government or an international organization to do, or refrain from doing, any act, and is made for the purpose of advancing or supporting act which constitutes terrorism within the meaning of this Act. (4) An act which(a) disrupts any services; (b) is committed in pursuance of a protest, demonstration or stoppage of work, shall be deemed not to be a terrorist act within the meaning of this section, so long and so long only as the act is not intended to result in any harm referred to in paragraphs, (a), (b), (c), or (d) of subsection (3). (5) In this Act, unless the context requires, otherwise, any reference to ''terrorist act'' shall include any act referred to in sections 5, 6, 7, 8, 9 and 10. 2002