TCB

from Jargon File (4.4.4, 14 Aug 2003)
TCB
 /T.C.B/, n.

   [IBM] 1. Trouble Came Back. An intermittent or difficult-to-reproduce
   problem that has failed to respond to neglect or {shotgun debugging}.
   Compare {heisenbug}. Not to be confused with:

   2. Trusted Computing Base, an `official' jargon term from the {Orange
   Book}.
    
from The Free On-line Dictionary of Computing (8 July 2008)
TCB

   1. <jargon> {Trouble Came Back}.

   2. <security> ({Orange Book}) {Trusted Computing Base}.

   3. <operating system> {Task Control Block}.

   [{Jargon File}]

   (1998-07-02)
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
TCB
       Task Control Block (BS2000)
       
    
from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)
TCB
       Trusted Computing Base (MS, Palladium)
       
    

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