T
- Target of Evaluation (TOE)
- Target of protection
- Technical regulation
- Telecommunication
- Telecommunication facilities
- Telecommunication system
- Text block
- Theoretical security
- Threat
- Threat
- Threat management
- Threat types
- Threshold cryptographic scheme
- Threshold secret sharing scheme
- Time complexity
- Timestamp
- Timestamping authority
- TOE resource
- TOE security functions
- TOE security functions interface
- TOE security policy
- TOE security policy model
- TOR (The Onion Router)
- Traffic
- Traffic (flaw) confidentiality
- Traffic analysis
- Traffic padding
- Transform free of error propagation
- Transport layer cryptographic mechanisms
- Trapdoor function
- Trapdoor function generator
- Trapdoor permutation family
- Treat-risk model
- Trojan
- Trojan horse
- Trojan horse
- True random sequence
- Trusted channel
- Trusted computing base
- Trusted Computing Base (TCB)
- Trusted entity, trusted authority, authority, trusted third party
- Trusted functionality
- Trusted path
- Tunnelling
- Two-factor authentication
- Two-party protocol