Abstract: A portable secured computing environment for performing online confidential transactions in an untrusted host computer. The secured computing environment may be loaded from a portable storage device, such as a USB stick, plugged into a peripheral port of the host computer. The secured computing environment may include a virtual machine running under a host operating system of the host computer. A secured operating system may be running in the virtual machine. An online application, such as a web browser in communication with an online service, may be run under the secured operating system. Operation of the online application may be restricted by a security profile. For example, the online application may only access network addresses specifically indicated in a whitelist of the security profile.

Abstract: A portable secured computing environment for performing online confidential transactions in an untrusted host computer. The secured computing environment may be loaded from a portable storage device, such as a USB stick, plugged into a peripheral port of the host computer. The secured computing environment may include a virtual machine running under a host operating system of the host computer. A secured operating system may be running in the virtual machine. An online application, such as a web browser in communication with an online service, may be run under the secured operating system. Operation of the online application may be restricted by a security profile. For example, the online application may only access network addresses specifically indicated in a whitelist of the security profile.