Transactions have moved away from faceto- face encounters to more being on the Internet. The infrastructure for the business and information exchange activities could be client-server, peer-to-peer (P2P), or mobile networks. In this paper we refer to ?peer? as an entity involved in a transaction. Trust between two interacting peers involved in an electronic transaction is a major issue that needs to be addressed in order to make the internet a safe medium for carrying out transactions. In this paper, we propose the aspects that can influence the trustworthiness assigned to the trusted peer. Furthermore we catalogue these factors into three classes and discuss the relationship between these factors.