International Journal of Advanced Research in Computer Engineering & Technology
During the past years, security of computer networks has become main stream in most of everyone's lives. Now-a-days as the use of computerized or online transactions is increased so there is very much needs to secure the information from intruders. So today mainly discussions on computer security are centered on the tools or techniques that are used in protecting and defending networks. The researchers proposed a number of techniques like encryption and firewalls, to protect the computers and but with this techniques the intruders or attackers managed to penetrate the computers.