In today’s world, several kinds of data is accumulated in a cloud environment as the cost of devices of information and communication technology are decreasing day by day. There is an urgent need to analyze this massive data so that it can be helpful for the business and society. A new technology needs to be adapted as the quantity of data is so massive which is far more than tens of terabytes or tens of petabytes. Also, these days, social infra-structure services run for 24 hours and 7 days a week. Hence, there is an urgent need to change the configuration of system dynamically. The current paper highlights the information security in big data.