Systems and methods for automatically identifying non-canonical user sessions utilize demographics associated with a device identifier in comparison to demographics associated with requested content (e.g. video, website, etc.). If the demographics match above a threshold, then the session may be assumed to be canonical or associated with the original user. If the demographics of the content do not match the demographics of the user, then the session may be considered non-canonical. Upon identifying a non-canonical session, content selection based on demographics may be suspended until a timer expires or the session ends.