In today's world data is very important and the authors are storing their confidential data using the latest technology like - cloud, virtualization and BYOD (Bring Your Own Device i.e. Laptop, mobile etc.). They all are storing their confidential data over there .Even there is advancement in the thinking and behavior of hackers. Cyber attack is also a big concern. To provide cyber security and to protect from external threat - from unauthorized access etc., internal threat-that comes from an inside of an organization.