Security Abbreviations and Acronyms
- OPAOnline Privacy Alliance
- OPAPOverseas Presence Advisory Panxl
- OPER SYSTOperating System
- OPIEOne-Time Passwords In Everything
- OPMOffice of Personnel and Management
- OPMOffice of Program Management
- OPPAOnline Privacy Protection Act of 2003
- OPROffices of Primary Responsibility
- OPROfficial Pattern Release
- OPSOutbreak Prevention Service
- OPSOutbreak Prevention Services
- OPSECOpen Platform for Secure Enterprise Connectivity
- OPSYSOperating System
- ORAOrganizational Registration Authority
- ORCONDissemination and Extraction of Information Controlled By Originator
- ORESOffice of Research, Evaluation, and Statistics
- ORESOffice of Research, Evaluation and Statistics
- ORGOxford Research Gtoup
- ORSObservation Reports
- OSOperating System
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