Ghita Kouadri Mostéfaoui, Jongwoo Chae, Mansoo Kim and
Mokdong Chung
University of Fribourg, Pukyong National Univ.
email: mdchung@pknu.ac.kr
In the current computing environment, heterogeneous networks are widely available and they have many different properties such as transmission speed, communication media (RF, Infrared, Microwave, etc), connectivity, bandwidth, range and etc. Moreover, many types of computing devices are widely used and they have diverse capabilities. To secure this diverse environment, we should adapt several security levels dynamically according to the diverse networks and computing devices. Unfortunately, these characteristics of heterogeneous networks and diverse computing capabilities are dynamically changing by contexts. To cope with this dynamic computing environment, we should make security level more adaptive.
In this paper, we develop a security management system that dynamically adapts the security level according to a set of contextual information such as terminal types, service types, network types, user's preferences, information sensitivity, user's role, location, and time, using MAUT (Multi-Attribute Utility Theory) and Simple Heuristics in order to support secure transactions in the heterogeneous network.