Dr Campion (BA (Hons 1 Class) PhD (JCU) is a Senior Lecturer and Discipline Lead of Terrorism Studies at Charles Sturt University. She ublished Australia's first comprehensive history of terrorism, Chasing Shadows: The untold and deadly story of terrorism in Australia. 

Dr Campion is Coordinator and Key Researcher for the Threats to Australian Domestic Security team, within the Contemporary Threats to Australian Security (CTAS) research group. The Domestic Security team engages in collaborative research on the contemporary extreme right wing threat, with ongoing projects on insider threats, anti-government extremism, and youth. 

Her research focuses on terrorism and extremism in western democratic contexts. Her research on right wing extremism has canvassed transnational and domestic networks, ideologies, the participation of women, and more. Dr Campion's research on left wing extremism has examined both historical and contemporary strategies. Her research on religious-inspired terrorism has explored their presence and networks in Australia, tactical evolution, and targeting considerations.

She is the Joint Editor-in-Chief of Salus Journal, an independent peer reviewed policing journal; sits on the editorial board of Extremism  (United Kingdom) and the National Security Journal (New Zealand); and was a  guest editor of Social Sciences Special Issue on the Global Rise of the Far Right.