Dr Campion (BA (Hons 1 Class) PhD (JCU) is Senior Lecturer in Terrorism and Security Studies. In 2025, she was ranked as the top Australian researcher in her field nationally by The Australian Research Magazine, based on scholarly impact.

She published Australia's first comprehensive history of terrorism, Chasing Shadows: The untold and deadly story of terrorism in Australia. Her second manuscript is in preparation, and takes a deep dive into the Australian extreme right milieus, ideologies, and motivations. There are chapters on Christian extremism as occurred at Wieambilla, antigovernment extremism, neo-Nazism and more. 

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, online vectors, and more. Dr Campion's research on left wing extremism has examined both historical and contemporary strategies. Her research on religious terrorism has explored their presence and networks in Australia, tactical evolution, and targeting considerations.

She currently sits on the editorial board of the National Security Journal (New Zealand); and was a  guest editor of Social Sciences Special Issue on the Global Rise of the Far Right.