Visible Desktop Security in Trusted Extensions

Trusted Extensions provides a multilevel desktop.

A system that is configured with Trusted Extensions displays the trusted stripe except during login and screen lock. At all other times, the trusted stripe is visible.

The stripe is at the top of the screen. The trusted symbol appears on the trusted stripe when you interact with the trusted computing base (TCB). When you change your password, for example, you interact with the TCB.

When the monitors of a multiheaded Trusted Extensions system are configured horizontally, one trusted stripe appears across the monitors. However, if the multiheaded system is configured to display vertically, or has separate desktops, one desktop per monitor, then the trusted stripe appears on one monitor only.

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Caution  - If a second trusted stripe appears on a multiheaded system, the stripe is not generated by the operating system. You might have an unauthorized program on your system. Contact your security administrator immediately. To determine the correct trusted stripe, see How to Find the Mouse Pointer.

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For details about the applications, menus, labels, and features of the desktop, see Chapter 4, Elements of Trusted Extensions.