Glossary

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I
I Didn't Change Anything!
I See No X Here
I&A
I&A/D1
I&A/D2
I/0 Devices
I/0 Handlers
I/0 Manager
I/O
I/O Controller
IAC
IBAC
IBM Discount
ICBM Address
Ice
ICMP (Internet Control Message Protocol)
ICMP code
ICMP control messages
ICMP destination unreachable
ICMP echo
ICMP redirect
ICMP source quench
ICMP time exceeded
ICMP type
ICU
IDEA
Idempotent
Identification
Identification And Authentication
Identity badge
Identity card
Identity management
Identity theft
Identity Token
Identity Validation
Identity-Based
Identity-Based Security Policy
IDN
IDS
IEMATS
IETF (Internet Engineering Task Force)
If You Want X, You Know Where To Find It.
Ifdef Out
IFF
IFFN
II
IIRK
IIS
IKE
Ill-Behaved
ILS
IM
Imagery
Imagery Intelligence
Imagery Interpretation
IMAP (Internet Message Access Protocol)
IMHO
IMINT
Imitative Communications
Imitative Communications Deception
Imminent Death Of The Net Predicted!
IMP
Impact Area 1
Impact Delay Interval
Impact Percent
Impacted Assets
Impersonating
Impersonation
Implant
Implementation (Life Cycle)
Implementation Verification
Imposter
Impulsive Emanation
IN
In the clear
In The Extreme
IN/1
IN/1+
IN/2
Ina Jo
Ina Jo (formal Development Methodology)
Inadvertent
Inadvertent Disclosure
Inc
Incantation
Incident
Incident analysis
Incident Response
Incident severity
Include
Include War
Incomplete Parameter
Incomplete Parameter Checking
Incremental backup
Indent Style
Index
Indicator
Individual
Individual Accountability
Industrial Espionage
Industrial Security
Inetd
Inetd.config
INF
Infant Mortality
Infection
Inference
Inference Engine
Infinite
Infinite Loop
Infinite-Monkey Theorem
Infinity
Infix
Infocom
Information
Information And Indicator Sources
Information Availability
Information Bit
Information Categorization
Information Channel
Information Classification
Information Collection
Information Collection And Sharing
Information Confidentiality
Information Control
Information Criticality
Information Feedback
Information Field
Information Flow
Information Flow Analysis
Information Flow Control
Information Integrity
Information Label
Information Ownership
Information Perishability
Information Processing
Information Processing Center
Information Ratio
Information Resource Management
Information Resource Owner/Custodian
Information Resources Management
Information Security
Information Security Policy
Information Sensitivity
Information Source
Information States
Information System
Information System Abuse
Information System Security
Information System Security Officer
Information Systems
Information Systems Security
Information Systems Security Officer
Information Systems Security Product
Information Systems Security Products And Services Catalogue
Information Technology
Information Technology Facility
Information Technology Installation
Information Transfer
Information Valuation
Information warfare
Information-Transfer Phase
Information-Transfer Transaction
INFOSEC
Ingress filtering
Initial authentication stage
Initial Cost
Initial negotiation
Initial Product Assessment Report
Initial State
Initialize
Initiation
Input
Input Data
Input/output Device
Input-Output Channel
Input-Output Controller
Insanely Great
Inspectable Space
Installation
Instant messaging (IM)
Instruction
Instruction Processor
Instrumentation Signals Intelligence
Insurance
Integrated Digital Network
Integrated log
Integrated Services Digital Network
Integrated Station
Integrated System
Integrated Voice Data Terminal
Integrity
Integrity Check Value
INTEGRITY:D1
INTEGRITY:D2
Intellectual property
Intellectual Property Rights
Intelligence
Intelligence Collection
Intelligence Cycle
Intelligence Estimate
Intelligence Information
Intelligence Life
Intelligence Processing
Intelligence Production
Intelligence System
Intelligent Network
Intelligent Peripheral
Intelligent Terminal
Intention
Intentional
Interactive Computing
Interactive Data Transaction
Interagency Sharing Of Information Technology Facilities
INTERCAL
Interdiction
Interesting
Interface
Interim Approval
Interim Approval To Operate
Interior doors
Internal auditing
Internal Control Documentation
Internal Control Report
Internal Control Review
Internal Control System
Internal Controls
Internal Controls And Security
Internal firewall
Internal Label
Internal Memory
Internal Protected Distribution System
Internal Security Audit
Internal Security Controls
Internal Storage
International Espionage
International Organization for Standardization (ISO)
International Security Considerations
International Standards Organization
International Telecommunications Union–Telecommunications Standards Sector (ITU-T)
Internet
Internet Address
Internet Control Message Protocol (ICMP)
Internet Engineering Task Force (IETF)
Internet Information Server (IIS)
Internet Key Exchange (IKE)
Internet layer
Internet Message Access Protocol (IMAP)
Internet Official Protocol Standards
Internet Private Line
Internet Private Line Interface
Internet Protocol
Internet Protocol (IP)
Internet Security
Internet Server Application Programming Interface (ISAPI)
Internet use policy
Internet Worm
Internets
Internetwork Connection
Internetwork Operating System (IOS)
Internetworking
Interoperability
Interoperability Standard
Interoperation
Interorganizational systems
Interpret
Interprocess Communication (IPC)
Interrogation
Interrupt
Interrupt Handlers
Interrupt List, The
Interrupted Isochronous Transmission
Interruption
Interrupts And Traps
Interrupts Locked Out
Intranet
Introduction To Certification And Accredidation
Intrusion Detection
Intrusion detection system (IDS)
Intrusion Deterrents
INTSEC
Investigation
Investigation Of Security Breaches
Investigation(s)
Investigative Authorities
IOC
IOS (Internetwork Operating System)
IOSS
IOT&E
IP
IP (Internet Protocol)
IP address hiding
IP address spoofing
IP security (IPsec)
IPAR
IPC
IPC Files
IPM
IPsec (IP security)
IPsec gatekeeper
IPsec header
IPSO
IRC
Iris scanning
IRK
IRM
Iron
Iron Age
Iron Box
Ironmonger
IS
IS Program Budgeting
IS Security Program Planning
ISAPI
ISDN
ISINT
ISM
ISO
Isochronous
Isochronous Burst Transmission
Isolation
Isolation And Mediation
Isolation Of User Programs
ISRD
ISS
ISSO
IT
IT Asset Valuation
IT auditing
IT infrastructure
ITAR
Items Of Intrinsic Military Utility
ITF
ITM
ITS
ITU-T (International Telecommunications Union–Telecommunications Standards Sector)
IV&V
IVDT
IWBNI
Infinity
  • n. The largest value that can be represented in a particular type of variable (register, memory location, data type, whatever).
  • `minus infinity' The smallest such value, not necessarily or even usually the simple negation of plus infinity. In N-bit twos-complement arithmetic, infinity is 2^(N-1) - 1 but minus infinity is - (2^(N-1)), not -(2^(N-1) - 1). Note also that this is different from "time T equals minus infinity", which is closer to a mathematician's usage of infinity.