Secure by Prevention

Now there are program to prevent malware to cause damage the OS and other user information.But very less taken in protecting the data which were been attacked.

example there are detection against mass mailer , which uses the address book information to spread itself. but good protection of address book information will block any undetected malware from using it ?!

Idea presented here will not give 100% protection , but this will prevent more damage then detecting a malware.