The Cye platform uses the NIST Cybersecurity Framework (CSF) to classify and assess cybersecurity posture. This guide includes all CSF 1.1 subcategories, grouped by function and category — so you can apply them accurately to findings, mitigation actions, or governance reviews.

The format is function > category followed by the list of subcategories.

ID.AM-1: Physical devices and systems within the organization are inventoried

ID.AM-2: Software platforms and applications within the organization are inventoried

ID.AM-3: Organizational communication and data flows are mapped

ID.AM-4: External information systems are catalogued

ID.AM-5: Resources (e.g., hardware, devices, data, time, and software) are prioritized based on their classification, criticality, and business value

ID.AM-6: Cybersecurity roles and responsibilities for the entire workforce and third-party stakeholders (e.g., suppliers, customers, partners) are established

ID.BE-1: The organizations role in the supply chain is identified and communicated

ID.BE-2: The organizations place in critical infrastructure and its industry sector is identified and communicated

ID.BE-3: Priorities for organizational mission, objectives, and activities are established and communicated

ID.BE-4: Dependencies and critical functions for delivery of critical services are established

ID.BE-5: Resilience requirements to support delivery of critical services are established for all operating states (e.g. under duress/attack, during recovery, normal operations)

ID.GV-1: Organizational information security policy is established

ID.GV-2: Information security roles & responsibilities are coordinated and aligned with internal roles and external partners

ID.GV-3: Legal and regulatory requirements regarding cybersecurity, including privacy and civil liberties obligations, are understood and managed

ID.GV-4: Governance and risk management processes address cybersecurity risks

ID.RA-1: Asset vulnerabilities are identified and documented

ID.RA-2: Cyber threat intelligence and vulnerability information is received from information sharing forums and sources

ID.RA-3: Threats, both internal and external, are identified and documented

ID.RA-4: Potential business impacts and likelihoods are identified

ID.RA-5: Threats, vulnerabilities, likelihoods, and impacts are used to determine risk

ID.RA-6: Risk responses are identified and prioritized

ID.RM-1: Risk management processes are established, managed, and agreed to by organizational stakeholders

ID.RM-2: Organizational risk tolerance is determined and clearly expressed

ID.RM-3: The organization's determination of risk tolerance is informed by its role in critical infrastructure and sector specific risk analysis

ID.SC-1: Cyber supply chain risk management processes are identified, established, assessed, managed, and agreed to by organizational stakeholders

ID.SC-2: Identify, prioritize and assess suppliers and partners of critical information systems, components and services using a cyber supply chain risk assessment process

ID.SC-3: Suppliers and partners are required by contract to implement appropriate measures designed to meet the objectives of the Information Security program or Cyber Supply Chain Risk Management Plan.

ID.SC-4: Suppliers and partners are monitored to confirm that they have satisfied their obligations as required. Reviews of audits, summaries of test results, or other equivalent evaluations of suppliers/providers are conducted

ID.SC-5: Response and recovery planning and testing are conducted with critical suppliers/providers

PR.AC-1: Identities and credentials are issued, managed, revoked, and audited for authorized devices, users, and processes

PR.AC-2: Physical access to assets is managed and protected

PR.AC-3: Remote access is managed

PR.AC-4: Access permissions and authorizations are managed, incorporating the principles of least privilege and separation of duties

PR.AC-5: Network integrity is protected, incorporating network segregation where appropriate

PR.AC-6: Identities are proofed and bound to credentials, and asserted in interactions when appropriate

PR.AC-7: Users, devices, and other assets are authenticated (e.g., single-factor, multifactor) commensurate with the risk of the transaction

PR.AT-1: All users are informed and trained

PR.AT-2: Privileged users understand roles & responsibilities

PR.AT-3: Third-party stakeholders (e.g., suppliers, customers, partners) understand roles & responsibilities

PR.AT-4: Senior executives understand roles & responsibilities

PR.AT-5: Physical and information security personnel understand roles & responsibilities

PR.DS-1: Data-at-rest is protected

PR.DS-2: Data-in-transit is protected

PR.DS-3: Assets are formally managed throughout removal, transfers, and disposition

PR.DS-4: Adequate capacity to ensure availability is maintained

PR.DS-5: Protections against data leaks are implemented

PR.DS-6: Integrity checking mechanisms are used to verify software, firmware, and information integrity

PR.DS-7: The development and testing environment(s) are separate from the production environment

PR.DS-8: Integrity checking mechanisms are used to verify hardware integrity

PR.IP-1: A baseline configuration of information technology/industrial control systems is created and maintained incorporating appropriate security principles

PR.IP-2: A System Development Life Cycle to manage systems is implemented

PR.IP-3: Configuration change control processes are in place

PR.IP-4: Backups of information are conducted, maintained, and tested periodically

PR.IP-5: Policy and regulations regarding the physical operating environment for organizational assets are met

PR.IP-6: Data is destroyed according to policy

PR.IP-7: Protection processes are continuously improved

PR.IP-8: Effectiveness of protection technologies is shared with appropriate parties

PR.IP-9: Response plans (Incident Response and Business Continuity) and recovery plans (Incident Recovery and Disaster Recovery) are in place and managed

PR.IP-10: Response and recovery plans are tested

PR.IP-11: Cybersecurity is included in human resources practices (e.g., deprovisioning, personnel screening)

PR.IP-12: A vulnerability management plan is developed and implemented

PR.MA-1: Maintenance and repair of organizational assets is performed and logged in a timely manner, with approved and controlled tools

PR.MA-2: Remote maintenance of organizational assets is approved, logged, and performed in a manner that prevents unauthorized access

PR.PT-1: Audit/log records are determined, documented, implemented, and reviewed in accordance with policy

PR.PT-2: Removable media is protected and its use restricted according to policy

PR.PT-3: The principle of least functionality is incorporated by configuring systems to provide only essential capabilities

PR.PT-4: Communications and control networks are protected

PR.PT-5: Systems operate in pre-defined functional states to achieve availability

DE.AE-1: A baseline of network operations and expected data flows for users and systems is established and managed

DE.AE-2: Detected events are analyzed to understand attack targets and methods

DE.AE-3: Event data are aggregated and correlated from multiple sources and sensors

DE.AE-4: Impact of events is determined

DE.AE-5: Incident alert thresholds are established

DE.CM-1: The network is monitored to detect potential cybersecurity events

DE.CM-2: The physical environment is monitored to detect potential cybersecurity events

DE.CM-3: Personnel activity is monitored to detect potential cybersecurity events

DE.CM-4: Malicious code is detected

DE.CM-5: Unauthorized mobile code is detected

DE.CM-6: External service provider activity is monitored to detect potential cybersecurity events

DE.CM-7: Monitoring for unauthorized personnel, connections, devices, and software is performed

DE.CM-8: Vulnerability scans are performed

DE.DP-1: Roles and responsibilities for detection are well defined to ensure accountability

DE.DP-2: Detection activities comply with all applicable requirements

DE.DP-3: Detection processes are tested

DE.DP-4: Event detection information is communicated to appropriate parties

DE.DP-5: Detection processes are continuously improved

RS.RP-1: Response plan is executed during or after an event

RS.CO-1: Personnel know their roles and order of operations when a response is needed

RS.CO-2: Events are reported consistent with established criteria

RS.CO-3: Information is shared consistent with response plans

RS.CO-4: Coordination with stakeholders occurs consistent with response plans

RS.CO-5: Voluntary information sharing occurs with external stakeholders to achieve broader cybersecurity situational awareness

RS.AN-1: Notifications from detection systems are investigated

RS.AN-2: The impact of the incident is understood

RS.AN-3: Forensics are performed

RS.AN-4: Incidents are categorized consistent with response plans

RS.AN-5: Processes are established to receive, analyze and respond to vulnerabilities disclosed to the organization from internal and external sources

RS.MI-1: Incidents are contained

RS.MI-2: Incidents are mitigated

RS.MI-3: Newly identified vulnerabilities are mitigated or documented as accepted risks

RS.IM-1: Response plans incorporate lessons learned

RS.IM-2: Response strategies are updated

RC.RP-1: Recovery plan is executed during or after an event

RC.IM-1: Recovery plans incorporate lessons learned

RC.IM-2: Recovery strategies are updated

RC.CO-1: Public relations are managed

RC.CO-2: Reputation is repaired after an incident

RC.CO-3: Recovery activities are communicated to internal stakeholders and executive and management teams

This list can feel overwhelming — because it is. But tagging findings with the right subcategory makes your risk posture more transparent, traceable, and mature. Bookmark this guide, and don't treat NIST codes like a chore. They're just the taxonomy behind your security decisions.