In this section, first of all we focused on various research challenges of social media. Then we focused on introduction of Cyberbullying which is also a main research challenge of social media. After that we gave the related work for the detection of cyberbullying. A. Main Research challenges of Social media 1. Avoiding fragmentation of the social graph through open cross-platform interactions: Sometimes new application or new game tends to build a small social network and that application is limited to that social network only. So the research challenge is to make application that allow cross platform information exchange securely and avoid the fragmentation. 2. Communities discovery and analysis in large scale online and offline social networks: As social network is dynamic in nature. Communities are dynamically changing with time, so it become very difficult to detect communities in social network. 3. Security and Privacy in Social Networks Analysis: Security and Privacy is also one of the main challenges of social media. How to provide security to the users and how to protect the data exchange between users and between communities is also a very big challenge. 4. Social and Ethical Issues in a Networked World: Social media faces …show more content…
It is physically or verbally hurt another person or group. It is basically the intentional aggressive act carried out by a group or an individual repeatedly and over time against a victim who cannot easily defend him or herself [10]. The characteristics are central to conventional bullying are harm, repetition, power imbalance. According to Kowalski, Limber, & Agatston [8], bullying is an imbalance of power or strength .If this definition is transferred into cyberspace, and then it becomes cyberbullying. Cyberbullying is “sending or posting harmful material or engaging in other forms of social aggression using the Internet or other digital