[[!meta copyright="Copyright © 2007, 2008 Free Software Foundation, Inc."]] [[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable id="license" text="Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled [[GNU Free Documentation License|/fdl]]."]]"""]] TCB stands for trusted computed base. Unqualified, the trusted computing base referrers to the set of components programs must [[trust]] to function correctly. On multiserver systems, it is sometimes more appropriate to speak of the trusted computing base of a particular program: as components are much less connected, one program's trusted computing base may be significantly different from another's.