Online social networks have become an important part of our social lives, and their inherent privacy problems have become a major concern for users. As of March 2016, 142 million Indians maintain a social network profile on Facebook and 30 million on Twitter, which provides them with a convenient way to communicate with family, friends and even total strangers. The Services provided by social media though add convenience to our life to a great extent and have made the world a much closely connected, this boon comes with few hidden problems. Though social media lets users share a part of our life to the world, it also gives birth to the security threats to our personal information. The users are confronted with a dichotomy between sharing information with their loved ones and friends and sharing information with everyone else on the internet. To help users tackle this dilemma, social networks provide a plethora of privacy settings which allow the user to control his/her pri
INTRODUCTION TWITTER is a popular online social network and microbloging service for exchanging messages (also known as tweets) among people, supported by a huge ecosystem. Twitter announces that it has over 140 million active users creating more than 340 million messages every day [26] and over one million registered applications built by more than 750,000 developers [25]. The third party applications include client applications for various platforms, such as Windows, Mac, iOS, and Android, and web-based applications such as URL shortening services, image-sharing services, and news feeds. Among the third party services, URL shortening services which provide a short alias of a long URL is an essential service for Twitter users who want to share long URLs via tweets having length restriction. Twitter allows users to post up to 140-character tweets containing only texts. Therefore, when users want to share complicated information (e.g., news and multimedia), they should include a UR