A2BeST: An adaptive authentication service based on mobile user's behavior and spatio-temporal context

Mobile devices are becoming mandatory equipment in modern life. However, the connections are usually based on traditional authentication processes, which do not consider the environmental characteristics, restrictions of devices, and information provided by sensors within the pervasive space. In this paper, it is presented a novel adaptive authentication service based on mobile user's behavior and spatio-temporal context (A2BeST). It adopts user authentication on mobile devices based on a spatio-temporal context, which allows the modeling of the user behavior witch defines events and tasks that compound the user activity. The experimental results indicate a more dynamic and autonomic mechanism for authenticating users. In addition, it provides a relevant efficiency of proposal using a space-time permutation model and similarity vector model to detect authentication anomalies.