| Abbreviation | Definition |
|---|---|
| PIN | Password Identification Notification |
| PING | Privacy Is Not Guaranteed |
| PIPS | Pre-Incident Planning System |
| PIR | Priority Information Report |
| PISR | Personal Information Security Redux |
| PISS | PIN (Personal Identification Number) Index Safety System |
| PITR | Point-In-Time Recovery |
| PIV | Personal Identity Verification |
| PK | Public Key |
| PKA | Public Key Algorithm |
| PKA | Public Key Authentication |
| PKC | Public Key Cryptography |
| PKES | Public Key Enablement Service |
| PKIX | Public Key Infrastructure for X.509 Certificates |
| PKM | Personal Knowledge Management |
| PKM | Private Key Management |
| PKO | Private Key Operation |
| PKP | Public Key Partner |
| PKS | Public Key Server |
| PKS | Public Key System |