| Abbreviation | Definition |
|---|---|
| IANS | Institute for Applied Network Security |
| IAO | Information Assurance Officer |
| IAST | Interactive Application Security Testing |
| IBCSE | Identity Based Combined Signature and Encryption |
| IC3 | Internet Crime Complaint Center |
| ICAS | Integrated Cyber Analysis System |
| ICD | Integrated Cyber Defense |
| ICE | Immigration and Customs Enforcement |
| ICISR | International Consortium For Information Security Research |
| ICS | Institute for Cyber Science |
| ICSF | Institute for Computer Security and Forensics |
| ICSSP | Illinois Cyber Security Scholars Program |
| ICSSP | Illinois Cyber Security Scholarship Program |
| IDAMS | Identity & Authentication Management Service |
| IDES | International Data Encryption Standard |
| IDSS | Integrated Defense and Security Solutions |
| IETF | Internet Encryption Task Force |
| IGIU | Important Guide Information Users |
| IGK | I Got Kidnaped |
| IHS | Incident Handling Standards |