This paper assesses the effectiveness of security-based programs to reduce repeat domestic violence. A systematic search was conducted of the scientific literature, as well as an electronic newspaper database and the Internet, for published reports of domestic violence prevention programs involving security applications. The study was unable to identify cases with full experimental designs showing clear evidence of positive effects. However, five types of applications were identified with promising evidence of reduced violence – Offender GPS tracking, shelter security, home security, personal duress alarms, and combined home security and duress alarms. Within this framework the study identified six specific programs showing evidence of success. An emerging potential model of good practice – which requires further empirical investigation – involves the deployment of home security and mobile duress alarms within a coordinated program of professional support for clients.