| Abbreviation | Definition |
|---|---|
| STAT | Secure Timed Audit Trail |
| STAT | Security Test and Analysis Tool |
| STCA | Security Technologies for Collaborative Architectures |
| STD | Security Tools Distribution |
| STO | Security Through Obscurity |
| STR | Suspicious Transaction Reporting |
| STRIP | Secure Tool for Recalling Important Passwords |
| STS | Sound Telecommunication Security |
| SUS | System Update Service |
| SVI | Switched Virtual Interface |
| SVK | Signature Verifiable Key |
| SVP | Secure Video Processor |
| SXV | Self-eXpanding Virus |
| SZE | Security Zone Entry |
| SZE | Shared Zone Entry |
| TACTED | TACtical Trunk Encryption Device |
| TAS | Token Access Support |
| TAS | Toshiba Authentication Service |
| TASO | Terminal Area Security Officer |
| TC | Transform Coding |