Cyber-Incident Response Playbook for NIS2 Compliance

Overview#

A public-safety command and control platform is itself critical infrastructure, and any cyber incident affecting it triggers regulated notification obligations from the moment it is declared.

The Cyber-Incident Response Playbook gives security responders a single, fully audit-trailed workflow to detect, triage, contain, eradicate, recover from, and report cyber incidents against the platform. It runs the response against a canonical incident record, links any operationally affected clinical or dispatch records through cross-incident correlations, and produces the EU NIS2 Directive 24-hour early warning, 72-hour incident notification, monthly progress update, and final report, all against the same timeline a regulator can read from end to end.

Key Features#

• Declare Once, Notify on Schedule: A security responder declares the cyber incident as a single canonical record. The platform then tracks the NIS2 24-hour early warning, 72-hour incident notification, monthly progress update, and final report obligations against that record, so no notification milestone is missed.

• Public-Safety Threat Coverage: Pre-built response playbooks address the threats this platform actually faces, including ransomware against patient-report data, credential theft against dispatcher consoles, abuse of voice-processing components, supply-chain compromise of connected services, and denial-of-service against the call-taking surface.

• NCSC IE and CSIRT-IE Notification Templates: The early warning, 72-hour notification, and final report are produced from versioned templates aligned to the expectations of Ireland's National Cyber Security Centre and CSIRT-IE, so responders do not draft regulator-facing prose under time pressure.

• MITRE ATT&CK and ATLAS Mapping: Every incident is annotated with adversary tactics, techniques, and procedures drawn from the ATT&CK enterprise matrix and, where voice or automated components are implicated, from the MITRE ATLAS adversarial-machine-learning framework, giving each report a taxonomy regulators and peer CSIRTs already understand.

• Cross-Incident Correlation: A cyber incident is linked to any clinical or operational incidents whose data integrity, availability, or confidentiality may have been affected, giving regulators and responders a single scoped view that aligns the operational and regulatory perspectives.

• Threat Intelligence Exchange: Indicators captured during containment are exported as STIX 2.1 bundles and shared with peer CSIRTs over TAXII 2.1, so defensive value flows out of the response rather than staying siloed.

• Versioned Notification Audit Trail: Every regulator notification is recorded on the incident timeline as a structured event capturing the recipient, the notification class, and the exact report version sent. The timeline is immutable and can be presented to a regulator verbatim.

• Containment, Eradication, and Recovery Tracking: Playbook steps record who acted, when, with what justification, and what evidence was captured. The post-incident report assembles itself from the timeline rather than from memory.

Use Cases#

National Cybersecurity Centres and CSIRTs#

Teams responsible for national or sector-wide cyber coordination can receive structured NIS2 notifications produced directly from platform incident records, and can subscribe to STIX/TAXII indicator feeds as containment progresses.

Emergency Communications Centres#

• Ransomware Against Patient-Report Data: A responder isolates affected storage, switches patient-record capture to its degraded-mode path, ships the 24-hour early warning within the regulatory window, and tracks restoration against verified clean backups while preserving forensic copies.
• Stolen Dispatcher Credential: Anomalous account activity is detected, active sessions are revoked, the account is rotated and re-attested, and the incident is correlated to any dispatched calls within the suspect window.
• Denial-of-Service Against Call-Taking: A flood attack is contained through edge mitigations, the operational impact on incident creation is recorded on the cyber timeline, and the 72-hour notification reflects realised public-safety impact rather than speculation.

Security Operations Teams#

• Supply-Chain Compromise: A vulnerable dependency or compromised third-party connector triggers the supply-chain playbook, scoping affected services, rotating any exposed credentials, and producing the regulator notification with vendor advisory references attached.
• Adversarial Voice Component Abuse: Suspected manipulation of voice-processing flows is captured against MITRE ATLAS techniques, the affected conversation paths are quarantined, and the notification scope to the regulator is decided on the same record.
• Cross-Border CSIRT Exchange: Indicators captured during containment are packaged as STIX 2.1 and shared over TAXII 2.1 so peers can pre-empt the same campaign across jurisdictions.

Integration#

The playbook integrates with the platform through its standard developer interfaces:

• Canonical Incident Record: Cyber incidents are first-class incident records within the platform's unified incident model, so the same timeline, evidence store, and audit machinery already used for operational incidents carries the cyber response without duplication.

• Cross-Incident Linking: The platform's incident correlation model links a cyber incident to any clinical or operational incidents whose data integrity, availability, or confidentiality is potentially affected, producing a single scoped view for both responders and regulators.

• MITRE ATT&CK and ATLAS Annotation: The threat-mapping capability annotates cyber incidents with adversary techniques from the ATT&CK enterprise matrix and the ATLAS adversarial-machine-learning matrix through the platform's GraphQL API, surfacing queries such as mapped techniques and aggregate statistics per organisation.

• NIS2 Notification Generation: The platform generates the NCSC IE early warning, 72-hour incident notification, monthly progress update, and final report from versioned templates populated directly from the cyber incident record, exposed as API endpoints and available in the responder dashboard.

• STIX 2.1 and TAXII 2.1 Producer: Containment-derived indicators are published as STIX 2.1 bundles on a TAXII 2.1 collection. Peer CSIRTs can subscribe to the collection for automated polling, or bundles can be exported on demand via the platform API.

• Security Incident Response Integration: The cyber playbook reuses the platform's forensic capture, chain-of-custody, and post-mortem capabilities, so responders work in one consistent environment regardless of whether an incident is classified as operational or cyber.

• Event Bus: Incident lifecycle is emitted as CloudEvents 1.0 structured events so SIEM platforms, governance dashboards, and downstream consumers can react to state changes without polling. Events cover declaration, containment completion, and each regulator notification dispatched.

• Authentication and Authorisation: All API access uses OAuth 2.0 bearer tokens issued by the platform identity service. Role-based permissions gate playbook actions so that declaration, notification dispatch, and evidence capture each require explicit authorisation.

Open Standards#

• EU NIS2 Directive (2022/2555): The playbook is built around the Directive's mandatory 24-hour early warning, 72-hour incident notification, monthly progress, and final report obligations for essential and important entities.

• ISO/IEC 27001:2022 (A.5.24-A.5.30): The information-security incident management controls of the 2022 revision shape the responder workflow, from planning and reporting through assessment, response, learning, and ICT-readiness for business continuity.

• ISO/IEC 27035: The multi-part incident management process standard informs the lifecycle phases and evidence-retention expectations the playbook enforces across preparation, detection, assessment, response, and lessons-learned.

• NIST SP 800-53 (IR-4 Incident Handling): The structured incident-handling control baseline the cyber playbook implements, covering preparation, detection, analysis, containment, eradication, and recovery.

• NIST SP 800-61 r2 (Computer Security Incident Handling Guide): Informs the preparation, detection and analysis, containment, eradication, and recovery flows the responder follows during an active engagement.

• MITRE ATT&CK: Adversary tactics, techniques, and procedures are recorded against the ATT&CK enterprise taxonomy so reports use a vocabulary regulators and peer CSIRTs already understand.

• MITRE ATLAS: Adversarial-machine-learning techniques and tactics are recorded against the ATLAS matrix for incidents involving automated voice or data-processing components.

• STIX 2.1 (OASIS): Structured threat information about indicators, observed behaviour, and campaign context is expressed using the standard Structured Threat Information Expression format for interoperability with external CSIRT and threat-intelligence platforms.

• TAXII 2.1 (OASIS): Indicator bundles are transported between the platform and peer CSIRTs over the Trusted Automated Exchange of Intelligence Information protocol, enabling automated subscription and polling.

• CloudEvents 1.0 (CNCF): Cyber incident lifecycle events are emitted using the CloudEvents specification so SIEM platforms, governance dashboards, and downstream consumers can integrate without bespoke event parsing.

• Cyber Essentials Plus (UK/IE aligned baseline): The preventive control baseline informs the posture assessment against which residual exposure is reported during and after a cyber incident.

• OAuth 2.0 / OpenID Connect: All platform API access, including playbook operations and notification dispatch, is secured using standard OAuth 2.0 bearer tokens with OIDC-backed identity.

Security and Compliance#

The playbook is designed specifically for operators of essential and important entities under NIS2. All playbook actions are recorded with immutable timestamps, actor identity, justification, and evidence references, producing an audit trail that satisfies both NIS2 Article 23 reporting obligations and the evidence-retention requirements of ISO/IEC 27035. Notification templates are versioned so that changes to regulatory guidance can be tracked and applied without rewriting historical records. The STIX/TAXII export pathway is tenant-scoped so that indicator sharing is always deliberate and authorised.

Last Reviewed: 2026-05-05 / Last Updated: 2026-05-05