Author(s): Nikita Bahaley
This paper provides a study on the fact that how important is to maintain the privacy, authenticity of data while it goes through network or stored on the server along with some measures that should b e taken to prevent it from malicious use. In today’s era whatever may be the age group of people in the society, everybody uses electronic devices and internet for sending personal/official data or files, for educational purpose, for doing bank transactions, downloading data from the internet etc. so it is very crucial to keep the information safe from unauthorized access that is sent, received, downloaded i.e. goes through internet or stored on some server. The basic security requirement of any network is its confidentiality, integrity and authentication. Whether it is a physical layer or application layer or any layer; the information must be secured at all the levels while it goes from source to destination as well as during its storage in wired as well as wireless networks.