| Abbreviation | Definition |
|---|---|
| IDPS | Intrusion Detection and Prevention Service |
| IDR | Intelligent Disaster Recovery |
| IDS | Interface Domain Signature |
| IDSC | Intrusion Detection Systems Consortium |
| IE | Intelligent Encryption |
| IESD | Indian Ethnic Security Dilemma hoax |
| IETF | Intensional Existential Textuality Fanatics |
| IF | Information Foraging |
| IFS | Internet Fraud Screen |
| IIS | Insecure Infiltration System |
| IIS | Instant Insecure Server |
| IJB | Internet JunkBuster |
| IKE | Implicit Key Expiration |
| IKE | Internet Key Encryption |
| IKEP | Internet Key Encryption Protocol |
| IKES | Internet Key Encryption System |
| IKG | Internet Key Generator |
| IKM | Internet Key Management |
| IKMP | Internet Key Management Protocol |
| IKP | Internet-Keyed Payment |