| Abbreviation | Definition |
|---|---|
| FT | Fully Trusted |
| FUD | Fully UnDetected |
| FUV | Fordham University Virus |
| FW | Fire Wall |
| FYI | Filter Your Internet |
| G4S | Group 4 Securicor |
| GABCS | Government Advisory Board for CyberSecurity |
| GACL | Generic Access Control List |
| GESC | GeoTrust Enterprise Security Center |
| GETS | Government Emergency Telecommunications Service |
| GIAC | General Inquiry Access Code |
| GINA | Graphical Interface For Neural Applications |
| GLESEC | GLobal Electronic-SECurity |
| GLT | Ghetto LAN (Local Area Network) Thugs |
| GPE | Group Policy Editor |
| GPEE | General Purpose Encryption Equipment |
| GPG | GNU Privacy Guard |
| GPK | Gerombolan Pengacau Keamanan (hackers) |
| GRI | Guarding Rights Indefinite |
| GSI | Grid Security Infrastructure |