| Abbreviation | Definition |
|---|---|
| OSA | Open System Authentication |
| OSCE | Offensive Security Certified Expert |
| OSDT | Oracle Security Developer Tools |
| OTS | Online Transaction Security |
| OWE | One Way Encryption |
| PAM | Privileged Access Management |
| PARC | Palo Alto Research Center |
| PBE | Passphrase Based Encryption |
| PCCS | Pennsylvania Cyber Charter School |
| PCDC | Palmetto Cyber Defense Competition |
| PCE | plaintext checkable encryption |
| PCIS | Partnership for Critical Infrastructure Security |
| PCNA | Protecting Cyber Networks Act |
| PCR | Partnering for Cyber Resilience |
| PCSS | Program on Cyber Security Studies |
| PFSP | Port Facility Security Plan |
| PGP | Pretty Good Privacy |
| PGS | Partnership for Global Security |
| PIFI | Personally Identifiable Financial Information |
| PII | Personally Identifiable Information |