Superior system and network security starts with a good indulgent of an organization’s operating environment. Organizations that have a good understanding of their operating environment  and that environment’s boundaries and vulnerabilities  should be able to secure their system moderately . Maintaining a high level of system security, however, is an on-going process that requires continued attention and solid organizational policies and procedures. This paper will review the various malware potential with different Operating System. It will help us to get a new system that will suitable to any operating system to safeguard from the malware.