| Abbreviation | Definition |
|---|---|
| FAM | File Alteration Monitor |
| FARP | False Alarm Reduction Program |
| FBE | Function-Based Encryption |
| FBI | Fingerprint Biometric Identity |
| FCC | Full Cycle Checking |
| FCFB | Fire Classified Floor Box |
| FDC | Fault Design Criteria |
| FEBA | Firewalls, Encryption, Backups, and Access |
| FED | File Encrypted Data |
| FEK | File Encryption Key |
| FEP | Forefront Endpoint Protection |
| FHC | Fairhaven Hacking Clan |
| FIC | Fidelis Interoperable Credential |
| FoIP | Fax over Internet Protocol |
| FPK | Fast Public Key |
| FPKI | Federal Public Key Infrastructure |
| FPOC | Fortezza PKI Operations Center |
| FRAM | Ferro-electric Random Access Memory |
| FSAV | F-Secure Anti-virus |
| FSS | File System Safe |