This chapter focuses on Canada's law enforcement approach to countering terrorism and, in particular, the prosecution of terrorist-related or terrorist-associated non-violent activities (precursor offences). The threat from right wing and jihadist-inspired homegrown violent extremism, especially from lone actors seemingly disconnected from hierarchical organizations, has reinforced the need for preventative counterterrorism measures, one component of which is a law enforcement response. Canada also utilizes non-legislative measures to support and prevent individuals from becoming radicalized and involved in violent extremism, but there is also a determination to denounce and deter those already radicalized from engaging whether online or offline in activities which advocate, facilitate, finance and support terrorist acts including the recruitment of vulnerable individuals.