In recent years, governments have considered how to respond to “disinformation.” However, there is little academic literature on Canada’s response in the area of security and foreign policy. This paper addresses this gap by analyzing how and why Canadian government foreign and security actors have “securitized” foreign disinformation. It argues that, since 2014, they have increased awareness about disinformation and transformed it into a matter of “security” through rhetoric and discursive framing, as well as stated policy intentions and actions. This has occurred in response to perceived threats, but without coherent policy. The findings suggest that challenges are linked to persistent difficulties in defining and understanding disinformation. The result has been fragmented actions, some of which may legitimate actions that deviate from “normal political processes.” The implications are that definitional challenges need to be addressed, the role of security actors assessed, and a clearly articulated and holistic strategy drawn.

近年来，各国政府都在考虑如何应对“虚假信息”。然而，关于加拿大在安全和外交政策领域的反应的学术文献很少。本文通过分析加拿大政府的外国和安全行为者如何以及为何将外国虚假信息“安全化”来解决这一差距。它认为，自 2014 年以来，他们提高了对虚假信息的认识，并通过修辞和话语框架以及明确的政策意图和行动将其转变为“安全”问题。这是为了应对感知到的威胁，但没有连贯的政策。调查结果表明，挑战与定义和理解虚假信息的持续困难有关。结果是支离破碎的行动，其中一些可能使偏离“正常政治进程”的行为合法化。其含义是需要解决定义上的挑战，评估安全参与者的作用，并制定清晰的整体战略。