Secure Security. Preventing Insecurity
What is security?
Security is the broad name for the software that protects your computer, remember, although it is security, the protective casing around your computer is not the type of security we're referring to here, although I suggest keeping it, because if a virus tries to kick your computer in the face, the metal casing WILL help. Metal casing will also help if the software breaks, your computer gets a virus, and you rage at it, the computer will be safer with metal casing.
An antivirus will do basically what it says on the tin, it will become the bane of any virus.