T
TCG - Trusted Computing Group (organization promoting open standards to help strengthen computing platforms against security weaknesses and attacks)
TCSEC - Trusted Computer System Evaluation Criteria (U.S. Department of Defense standards/guidelines for evaluating computer security systems (Orange Book) used until 2005, when it was superseded by a new procurement standard called the Common Criteria)
TEMPEST - Transient Electromagnetic Pulse Emanation Standard (standard used to measure equipment or shielding technology used to suppress electrical signals emitted by electrical equipment)
TOGAF - The Open Group Architecture Framework (open enterprise architecture model intended to provide a framework for standardized development)