• PUNEET PALAGI

Although there is a dramatic increase in OSN usage – Facebook, for instance, has now 1.55 billion monthly active users, 1.31 billion mobile users, and 1.01 billion daily users1 there are also a lot of security/privacy concerns. One of the main source of these concerns is that OSN users establish new relationships with unknown people with the result of exposure of a huge amount of personal data. Unfortunately, very often users are not aware of this exposure as well as the serious consequences this might have. This risk estimation service will allow a user to make more consciously decisions about his/her privacy-risky activities within the network (e.g., answering to a friend request).Moreover, conducting a risk assessment in OSN will allow the service providers to minimize risk and help users to create and maintain a healthier friendship environment. We believe that a risk score can be useful for those users who want to ’inspect’ their contacts, and also for the service providers wishing to know which users are risky. Therefore, our goal in this paper is to assign a risk score to each user, by taking into account both the user’s activities and friendship patterns in the network. The goal is to compare the behavioral patterns of users with other users in the network to find anomalous behaviors. The key idea is that the more the user behavior diverges from what it can be considered as a ’normal behavior’, the more it should be considered risky (i.e., with high risk score).

OSN, RISK ASSESSMENT, SOCIAL NETWORKS.

" A NOVEL APPROACH TO RISK ASSESSMENT IN ONLINE SOCIAL NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.471-485, June 2019, Available :http://www.jetir.org/papers/JETIR1906P70.pdf

" A NOVEL APPROACH TO RISK ASSESSMENT IN ONLINE SOCIAL NETWORKS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp471-485, June 2019, Available at : http://www.jetir.org/papers/JETIR1906P70.pdf