See below Expanded Domain ontology for Cyber-IR

Dimension 1 -- System State:

     1.1. Cyber-IR System

1.      A. Internet—Layers
   1.      1. Physical Layer
   2.      2. Logical Layer
   3.      3. Information Layer
   4.      4. People & Users Layer
2.      B. International Relations (IR)—Levels  
   1.      1. Levels of Analysis
   2.      2. Cross Level Actors & Entities
   3.      3. Cross Level Activities
   4.      4. Other
3.      C. Supply Chain 
   1.      1. Contents & Components
   2.      2. Sources, Locations & Owners
   3.      3. Trade & Transactions
   4.      4. Uncertainties, Problems, Barriers
4.      D. Standards

     1.2. Intersection of Layers & Levels

1.      A. Types of Intersection
   1.      1. Features & Salience
   2.      2. Infrastructure & Communication
   3.      3. Management & Governance
   4.      4. Jurisdictions & Locations
2.      B. Internet institutions & Decision Entities
   1.      1. Innovators, Technologists & Protocol Design
   2.      2. Operators, Routing & Supports
3.      C. International Relations (IR) Institutions & Decision Entities
   1.      1. State Actors & Institutions
   2.      2. International & Regional Entities
   3.      3. Market, Industry, Business & Non-State Actors
   4.      4. Other
4.      D. Interactions across Levels & layers
   1.      1. Drivers of Interactions
   2.      2. Actors & Interests
   3.      3. Relevance & Impacts
   4.      4. Other

     1.3. Cyber-IR Actors & Activities

1.      A. Individual & Groups
2.      B. State Users & Activities
   1.      1. Governance & Regulation
   2.      2. Defense & National Security 
   3.      3. Services Provision
   4.      4. Regulation, Extraction & Other
3.      C. International Actors & Activities
   1.      1. Coordination of Cooperation
   2.      2. Supports for Institutions & Missions
   3.      3. Policy Development
   4.      4. Outreach & Other
4.      D. Innovations and Innovators 

     1.4. Global Actors & Entities

1.      A. Anonymous
2.      B. Formal & Informal
3.      C. Illegitimate
4.      D. Other 

 

Dimension 2 -- Problems for Cyber–IR System:

     2.1. Threats to Layers

1.      A. Physical Systems & Operations
   1.      1. Cables, Wires, Infrastructure
   2.      2. Network Systems
   3.      3. ICT Attacks Vectors
   4.      4. Supply Chain, Industrial Trade Threats
2.      B. Cyber Security Threats & Transgressions
   1.      1. Malware & Malicious Code
   2.      2. Bypass-Security Modes
   3.      3. Overt Conduct of Damage
   4.      4. Other
3.      C. Threats & Damage to Information
4.      D. Threats to People & Users

     2.2. Threats to Levels

1.      A. Individuals & Groups
   1.      1. Threats to Cyber Access
   2.      2. Identity Loss
   3.      3. Threats to Privacy
   4.      4. Other
2.      B. State Level Targets & Damages
   1.      1. Critical Infrastructures
   2.      2. Defense Infrastructure 
   3.      3. Industry & Manufacturing
   4.      4. Other
3.      C. International Disruptions
4.      D. Global Risks & Disruptions

     2.3. Threats at Intersections of Systems

1.      A. Physical
2.      B. Computational
3.      C. Operational
4.      D. Policy

     2.4. Loss of Value—Layers & Levels

1.      A. Productivity, Time & Money
   1.      1. Information Loss
   2.      2. Loss of National/Business Secrets 
   3.      3. Loss of Value
   4.      4. Other
2.      B. Physical System Loss
3.      C. Transactions & Investments
4.      D. Loss of Legitimacy

Dimension 3 -- Technological & Scientific Responses:

     3.1. Layers of Internet

1.      A. Physical Layer
2.      B. Supply Chain Structure & Management 
3.      C. Network Security
   1.      1. Enhanced Authorization
   2.      2. Security at Control Points
   3.      3. Security of Exchange Points
   4.      4. System Resilience
4.      D. Integrated Risk Management 
   1.      1. Prevention
   2.      2. Risk Assessment
   3.      3. Early Warning Systems
   4.      4. Capability & Response

     3.2. Levels of International Relations

1.      A. Security of Critical Infrastructure
2.      B. Security of Human Wellbeing 
3.      C. Environmental Security
4.      D. Cybersecurity 

     3.3. Computer Network Defense

1.      A. Defense Analysis
2.      B. Infrastructure 
3.      C. Data Protection
4.      D. Cryptography 

     3.4. System Resilience

1.      A. Anticipation
2.      B. Adaption
3.      C. Innovation
4.      D. Organization

 

Dimension 4 -- Socio-Economic & Political Responses:

     4.1. Individuals & Group Level

1.      A. Situation Awareness
2.      B. Information Sharing
3.      C. Contentions & Conflict
4.      D. Other

     4.2. State Level

1.      A. Legal and Regulatory Systems
   1.      1. Communication & Cyber Law
   2.      2. Contract & Commercial Law
   3.      3. Consumer Protection Law
   4.      4. Civil & Criminal Law
2.      B. Capacity Building & Social Capital
   1.      1. Encryption Capability
   2.      2. Machine Learning & Artificial Intelligence
   3.      3. Digital Rights
   4.      4. Other
3.      C. Business & Non-State Initiatives
   1.      1. Codes of Conduct & Best Practices
   2.      2. IT Vendors Responsibly
   3.      3. Information Sharing
   4.      4. Other
4.      D. Partnerships & Voluntary Initiatives

     4.3. International Reponses

1.      A. International Institutions
   1.      1. International Telecommunication Union (ITU)
   2.      2. International Court of Justice (ICJ)
   3.      3. World Trade Organization (WTO)
   4.      4. Interpol & Other
2.      B. Joint Cyber-IR Initiatives
   1.      1. World Summit on the Information Society (WSIS) 
   2.      2. World Congress on Information Technology (WCIT)
   3.      3. Millennium Development Goals
   4.      4. Other
3.      C. Cyber International Institutions
   1.      1. Internet Corporation for Assigned Names and Numbers (ICANN)
   2.      2. Internet Engineering Task Force (IETF)
   3.      3. Internet Governance Forum (IGF)
   4.      4. Other
4.      D. International Law & Norms
   1.      1. Public International Law
   2.      2. Environmental Law 
   3.      3. International Cyber Law
   4.      4. Other

     4.4. Global Responses

1.      A. Situational Awareness
2.      B. Norms & Ethics
3.      C. Advocacy & Support Systems
4.      D. Other