Social Network Services an Overview

Abstract: The past few years a tremendous growth on Online Social Networks such a Facebook, Orkut and Twitter is seen. These OSNs not only offer attractive means for virtual social interactions and data sharing, but also raise a number of security issues. Although OSNs allow a single user to access to her or his data, they currently do not provide any mechanism to enforce privacy protection over data associated with large number of users, leaving privacy violations largely unresolved and leading to the potential disclosure of information that at least one user intended to keep private. This paper analyses the various privacy and security issues in OSNs. OSNs come across various types of attacks such a fake identity, Sybil attacks, Identity clone attacks, The main aim is to enhance the privacy and security in OSNs which is one of the Quality of Service (QoS) issues and thereby decreasing the attacks and issues. This paper is a survey which is more specific to expose the various attacks and privacy models in OSNs with respect to enhancement of security and privacy.

Keywords: Security, privacy, Sybil attacks, Identity Cloning attacks, Quality of Service (QoS).