A systematic review of the empirical literature on lone-actor terrorism, the first of its kind, is
presented. Across 109 sources, ten main themes that characterize this domain are identified …

This research note argues that the “lone wolf” typology should be fundamentally
reconsidered. Based on a three-year empirical research project, two key points are made to …

In the recent past, the numbers of religiously-and politically-motivated terrorist attacks have
increased, inevitably raising the question of effective measures to prevent further terrorist …

How does the internet affect the radicalisation of extreme-right lone actor terrorists? In the
absence of an established theoretical model, this article identifies six mechanisms seen as …

Improvements have been made in identifying the prevalence of risk factors/indicators for
violent extremism. A consistent problem is the lack of base rates. How to develop base rates …

To move beyond current aggregate and static conclusions regarding radicalisation and
subsequent terrorist behaviour, empirical research should look to criminological models …

This article provides a comparative analysis of lone-actor terrorist radicalization from a
relational perspective. Extant research on lone-actor terrorism has shown that lone actors …

Research Summary The lone‐actor terrorist population can be extremely heterogeneous
and difficult to detect. Intelligence is vital to countering this threat. We devise a typology of …

Research suggests that lone-actor terrorists and mass murderers may be better
conceptualized as lone-actor grievance-fueled violence (LAGFV) offenders, rather than as …

The threat posed by lone actors ranks high on the list of terrorism-related security concerns.
In recent years especially, discussions about these perpetrators have focused primarily on …