I&A - Identification and Authenticatio… 
IA - Information Assurance 
IAM - Information Assurance Manager 
IAVM - Information Assurance Vulnerabi… 
IAW - in accordance with 
ICARA - International Conference on Au… 
ICP - Interface Change Proposal 
ICU - Interface Control Unit 
IDES - Intrusion Detection Expert Syst… 
IDP - Individual Development Plan 
IDSS - Interoperability Decision Suppo… 
IET - Image Enhancement Technology 
IETM - Interactive Electronic Technica… 
IFD - Information Flow Diagram 
IFU - Interface Unit 
IIP - Internet Imaging Protocol 
IIP - Interoperability Improvement Pan… 
ILETS - International Law Enforcement… 
IM - Information Management 
IMF - Ifra Message Format 
IMUNE - Intrusion Mitigation Unified N… 
INFOSEC - Information Systems Security 
IOC - Initial Operational Capability 
IOMMU - Input Output Memory Management… 
IOT&E - Initial Operational Test and E… 
IOTE - Initial Operational Test and Ev… 
IPPM - Internet Protocol Performance M… 
IR - Incident Report 
IRCS - Institute for Research in Cogni… 
ISTQB - International Software Testing…