It is now a truism of criminology that the global security industry has been growing at a faster rate than regular police services and is now much larger in many locations in terms of personnel and expenditures. It is less widely recognised that the industry has played a key role in the large reductions in crime seen around the world since the 1990s, and that the industry plays a vital role in the primary prevention of offending and protection of potential victims of crime (Farrell, Tilley, & Tseloni, 2014; van Dijk, 2008, 2012). There are a number of possible reasons why these achievements receive so little attention. One is that the sector is practice focused. Claims about success in stopping crime tend to be confined to advertising – sometimes exaggerated – with little consideration given by industry members to scientific evidence about the effects of their work. Additionally, the growth of the industry – leading to its near-ubiquitous presence in all aspects of people’s lives – is widely seen as a major contributor to a surveillance-based and highly segmented society in which the wealthy and political elites exploit security services to protect their privileges and lifestyle at the expense of the poor and marginalised. Furthermore, the industry often attracts attention, especially from the media, over security failings and scandals – including fraud, violations of privacy, harassment, and assaults.