The widespread use of the Internet signals the need for a better understanding of trust as a basis for secure on-line interaction. In this paper we provide and discuss existing works on trust management models in the area of Multi Agent Systems and highlight the shortcomings. Our proposed model is not presented as the final solution to the issue. This new model will have a mechanism that allows agents to manage trust not by just one way but a few combinations of different types of trust in different situations. The proposed model is concerned with the general notion of trust, one that goes beyond cryptographic protocols. Findings from this paper can be used for future research work in the area of trust in Multi Agent Systems and to address further the importance of trust management on the Internet.

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[38] Zimmermann P., PGP User’s Guide, MIT, October 1994. Kanagaraj Krishna received his BSc degree in computer science, majoring in systems, from University of Technology Malaysia. Currently, doing postgraduate studies in the same university for MSc in computer science (security). Interest in CSCW and trust management related issues in computer agent community. Muhammad bin Maarof is an associate professor at Faculty of Computer Science and Information System. He obtained his BSc in computer science and MSc in computer science from USA and his PhD from Aston University, Birmingham, United Kingdom in the area of information technology security. He is currently leading the Information Security Group in the faculty. Currently, he involves as head of a research in the areas of agent security, immune-base intrusion detection system and cryptography.