Personal computer internet security system

A security method for protecting a personal computer from malicious code derived from an external data source comprising the steps of:

• loading a software application installable on the personal computer, the software application for protecting the computer's primary data files from being accessed by malicious code from an external data source;
• installing the software application on the personal computer, the installed application defining a isolated operating environment including a secondary operating system, the secondary operating system functioning in conjunction with and separate from a primary operating on the computer, and the installed application defining primary operating system permission codes to limit access to a node connectable to an external data source to the isolated operating environment under control of the secondary operating system;
• initiating an external data source interface session via the node within the isolated operating environment, and allocating a volatile memory space and a temporary data storage space to the secondary operating system for the duration of the session;
• and
• establishing connectivity with the external data source via the node under control of the secondary operating system to isolate operative communication with the external data source to the isolated operating environment, and protecting the personal computer from malicious code derived from the external data source.