All pages with prefix
- O
- O-TTPS
- O/S
- O1,…,O64
- OA
- OADR
- OAEP
- OAL
- OAM
- OASIS
- OASIS Structured Threat Information Expression
- OASIS Trusted Automated Exchange of Indicator Information
- OAuth
- OBD-II
- OCB
- OCC
- OCF
- OCI
- OCIL
- OCIO
- OCO
- OCP
- OCPI
- OCPP
- OCR
- OCSP
- OCTAVE
- OD
- ODBC
- ODM
- ODNI
- ODP
- ODV
- OECD
- OEM
- OEM Service Release 2
- OEP
- OET
- OFB
- OFDM
- OFW
- OGSA
- OHRP
- OID
- OIDC
- OIF
- OIG
- OIMO
- OIRA
- OISM
- OLA
- OLE
- OLE for Process Control
- OLIR
- OLIR Catalog
- OLIR Developer
- OLIR Program
- OLIR Template
- OMA
- OMB
- OMG
- ONC
- ONCD
- ONS
- OOB
- OODA
- OPACITY
- OPC
- OPCODE
- OPM
- OPRE
- OPSEC
- ORA
- ORB
- ORCON
- ORM
- OS
- OSC
- OSCAL
- OSDP
- OSHA
- OSHE
- OSI
- OSPF
- OSR2
- OSS
- OSSEC
- OSSTMM
- OT
- OTA
- OTAD
- OTAR
- OTAT
- OTP
- OTS
- OTT
- OU
- OUI
- OV
- OVA
- OVAL
- OVAL ID
- OVF
- OW-CPA
- OWASP
- OWL-S
- Object
- Object, Assessment
- Object Identification
- Object Linking and Embedding
- Object Management Group
- Object Naming Service
- Object attribute
- Object reuse
- Obligation
- Obscured data
- Observable
- Observational data
- Observe, orient, decide, and act
- Occupant Emergency Plan
- Occupation Safety and Health Administration
- Octet
- Octet Length
- Octet String
- Off-Card
- Off-Chain
- Off-The-Shelf
- Off-line cryptosystem
- Offensive cyberspace operations (OCO)
- Office for Civil Rights
- Office for Human Research Protections
- Office of Commercial Space Transportation
- Office of Engineering and Technology
- Office of Information Systems Management
- Office of Information and Regulatory Affairs
- Office of Management and Budget
- Office of Personnel Management
- Office of Planning, Research and Evaluation
- Office of Safety, Health and Environment
- Office of Space Commercialization
- Office of the Chief Information Officer
- Office of the Director of National Intelligence
- Office of the Inspector General
- Office of the National Coordinator
- Office of the National Cyber Director
- Official CPE Dictionary
- Official Identifier CPE Name
- Official information
- Offline Test
- Offset CodeBook
- Oj
- OmSVP
- On
- On-Access Scanning
- On-Board Diagnostic II
- On-Card
- On-Card biometric Comparison
- On-Chain
- On-Demand Scanning
- On-card comparison
- On-demand self-service
- On-demand test
- On behalf of (an agency)
- Onboarding
- One-Time Programmable Memory
- One-part code
- One-source mapping
- One-time cryptosystem
- One-time pad (OTP)
- One-time password
- One-time signature
- One-time tape (OTT)
- One-to-one
- One-way hash algorithm
- One-way transfer device
- One More Shortest Vector Problem
- Onetime Password
- Ongoing assessment and authorization
- Online Certificate Status Protocol (OCSP)
- Online Certificate Status Protocol responder
- Online cryptosystem
- Online service
- OpEx
- OpRisk
- OpenFAIR
- OpenFog RA
- OpenFog Reference Architecture
- OpenID Connect
- OpenPGP
- OpenShift Container Platform
- Open Access Same-Time Information Systems
- Open Authorization
- Open Charge Point Interface
- Open Charge Point Protocol
- Open Checklist Interactive Language (OCIL)
- Open Connectivity Foundation
- Open Container Initiative
- Open Database Connectivity
- Open Grid Services Architecture
- Open Group Risk Analysis and Taxonomy
- Open Identity Federation
- Open Mobile Alliance
- Open Platform Communication
- Open Platform Communications
- Open Pretty Good Privacy (OpenPGP)
- Open Protocol for Access Control, Identification, and Ticketing with privacY
- Open Relay Blacklist
- Open Security Controls Assessment Language
- Open Shortest Path First
- Open Source HIDS SECurity
- Open Source Security Testing Methodology Manual
- Open Source Software
- Open Supervised Device Protocol
- Open System
- Open Systems Interconnection
- Open Travel Alliance
- Open Trusted Technology Provider Standard
- Open Virtual Appliance
- Open Virtual Appliance or Application
- Open Virtualization Appliance
- Open Virtualization Archive
- Open Virtualization Format
- Open Vulnerability and Assessment Language (OVAL)
- Open Web Application Security Project
- Open Worldwide Application Security Project
- Open storage
- Operating Expenses
- Operating System (OS) Fingerprinting
- Operating system virtualization
- Operation
- Operation Security
- Operational Risk
- Operational Risk Management
- Operational Test
- Operational and Access Management
- Operational concept
- Operational environment
- Operational key
- Operational margin
- Operational optimization
- Operational phase
- Operational resilience
- Operational storage
- Operational waiver
- Operationalization
- Operationally Critical Threat, Asset, and Vulnerability Evaluation
- Operations Level Agreement
- Operations code (OPCODE)
- Operations security (OPSEC)
- Operator
- Opportunity
- Optimal Asymmetric Encryption Padding
- Option ROM
- Optional modification
- Oracle
- Orchestration
- Orchestrator
- Ordering privilege manager (OPM)
- Organisation for Economic Co-operation and Development
- Organization-Defined Value
- Organization-defined control parameter
- Organization-defined parameter
- Organization Validated
- Organization for the Advancement of Structured Information Standards
- Organization or Information System
- Organizational Conflict of Interest
- Organizational Information Security Continuous Monitoring
- Organizational Unit
- Organizational registration authority (ORA)
- Organizational system
- Organizational user
- Organizationally-tailored control baseline
- Original Design Manufacturer
- Original Device Manufacturer
- Original Equipment Manufacture Adaptation Layer
- Original Equipment Manufacturer
- Originating Agency’s Determination Required
- Originator
- Originator-usage period
- Originator Controlled
- Orphan block
- Oscillator
- OtherInput
- Other system
- Out-of-distribution
- Outage
- Outcome
- Outcome‐specific utility metrics
- Outer Firewall
- Output Block
- Output Feedback
- Output Feedback Block
- Output space
- Outside(r) threat
- Over-the-air key distribution (OTAD)
- Over-the-air key transfer (OTAT)
- Over-the-air rekeying (OTAR)
- Over the Air
- Overlay
- Overlay network
- Overt Testing
- Overt channel
- Overwrite
- Overwrite procedure
- Owner