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A computer code that is used, or designed to be used, with the aim of causing physical, functional or mental harm to structures, systems or people.

Cyber weapon is a contentious term among the international policy and legal communities, and there is an absence of agreement surrounding its connotations and implications. Avoid using ‘cyber weapon’ and use more generic terms such as 'destructive tools' or 'exploits' when describing the capabilities used by cyber actors.