In this paper, the authors make the information secure and also make the internet secures with the help of cryptography. Network security has become more important to personal computer users, organizations and the military. With the advent of the internet, security became a major concern and the history of security allows a better understanding of the emergence of security technology. The internet structure itself allowed for many security threats to occur. Information security is the process of protecting information. It protects its availability, privacy and integrity.