Abstract: A dual environment computing system and method is disclosed. The dual computing system includes a first computing environment and a second computing environment. A data repository encodes, at any one time, at least one of the first and second computing environments in a hibernated state. The dual environment computing system is arranged, on demand, to operate one of the first and second computing environments in an active state, the dual environment computing system being further arranged, on demand, to transition the one of the first and second computing environments being operated in the active state into a hibernated state in the data repository and to transition the other of the first and second computing environments from the hibernated state into an active state.

Abstract: A system and method for providing a secure computing environment to untrusted computer systems is described. A carrier media and an interface are provided, the interface being connectable to a computer to enable communication between the computer and the carrier media. The carrier media encodes a secure computing environment and a boot system, upon connection of the system via the interface to a computer system and booting of the computer system, the boot system is operative to take over the boot process of the computer system and to authenticate the user, wherein upon successful authentication, the boot system is arranged to load the secure computing environment on the computer system, the secure computing environment being configured to prevent predetermined interaction from outside the secure computing environment when it is running.

Abstract: A system and method for providing a secure computing environment to untrusted computer systems is described. A carrier media and an interface are provided, the interface being connectable to a computer to enable communication between the computer and the carrier media. The carrier media encodes a secure computing environment and a boot system, upon connection of the system via the interface to a computer system and booting of the computer system, the boot system is operative to take over the boot process of the computer system and to authenticate the user, wherein upon successful authentication, the boot system is arranged to load the secure computing environment on the computer system, the secure computing environment being configured to prevent predetermined interaction from outside the secure computing environment when it is running.