[header] How to understand computer system security needs [title] Analyze the operating system on the machine (s). [step] Security requirements will vary depending on which os and which version you are running. Make sure that the latest service packs and patches are installed. 
[title] Analyze the environment in which your system will operate. [step] If your machine will not be in any local network and will never be connected to the internet, then you can be relatively sure of the system security.