1. A personal computer, comprising: a plurality of inner firewalls comprising at least one hardware component and/or at least one firmware component configured to operate within the personal computer, the personal computer being configured to operate in at least one network of computers, the personal computer comprising at least two microprocessors and at least two memory components, the at least two microprocessors being located on a single microchip; at least one of the plurality of inner firewalls being configured to deny access to at least one first microprocessor and at least one first memory component of the personal computer by at least one other computer through at least one network connection with the personal computer during at least one shared operation, and another at least one of the plurality of inner firewalls being configured to allow access to at least one second microprocessor and at least one second memory component of the personal computer by the at least one other computer through the at least one network connection with the at least one personal computer during the at least one shared operation.