A personal computer or microchip, comprising: an internal hardware firewall located between and separate from a protected portion and an unprotected portion of hardware of the computer or microchip; the protected hardware portion being unconnected to a network of computers and including a volatile memory and a master control unit and/or a microprocessor; the unprotected hardware portion being located between the internal hardware firewall and the network and including one or more microprocessors and a volatile memory, the unprotected microprocessors being separate from the internal hardware firewall, and the unprotected hardware portion being connected to the network; the internal hardware firewall denying access by the network to the protected hardware portion; and the internal hardware firewall does not control access by the network to the unprotected hardware portion, so that operations conducted by the computer or microchip with the network are conducted in by the unprotected microprocessors in the unprotected hardware portion.