Framework: The NIST Cybersecurity Framework (CSF)

RS.MI-01 focuses on containing incidents to prevent their expansion, using automated tools like antivirus or manual actions by responders to isolate threats. This can involve third-party assistance (e.g., ISPs) or redirecting compromised endpoints to remediation VLANs, limiting damage. It stops incidents from spreading further.

This subcategory aligns containment with risk priorities, ensuring rapid action protects critical assets and minimizes disruption. It supports a proactive stance by leveraging both technology and human intervention as needed. RS.MI-01 is the first line of defense in incident mitigation.

RS.CO-03 involves sharing incident information with designated stakeholders—both internal, like leadership, and external, like ISACs—consistent with response plans and agreements. This includes voluntary sharing of anonymized attack data or updates on insider threats with HR, enhancing situational awareness. It ensures relevant parties stay informed.

This subcategory strengthens response by aligning information flow with contractual rules and crisis protocols, such as supplier coordination. It promotes broader cybersecurity collaboration while protecting sensitive data. RS.CO-03 builds a network of informed responders and supporters.

RS.CO-02 ensures timely notification of internal and external stakeholders—like customers, partners, or regulators—about incidents, following breach procedures or contractual obligations. This includes notifying law enforcement when criteria and approvals dictate, maintaining transparency and compliance. It keeps affected parties informed and engaged.

This subcategory aligns communication with legal and risk requirements, reducing delays in critical notifications that could impact trust or recovery. It supports coordinated response by ensuring stakeholders know their roles or risks. RS.CO-02 fosters a collaborative incident response ecosystem.

RS.AN-08 estimates and validates an incident’s magnitude by assessing its scope and impact, searching other targets for indicators of compromise or persistence. This involves manual reviews or automated tools to confirm the extent of damage or spread, refining initial assessments. It quantifies the incident’s true reach.

This subcategory aligns analysis with risk priorities, ensuring resources target the full breadth of an incident, from isolated to systemic effects. It supports effective mitigation by clarifying the scale of response needed. RS.AN-08 ensures a comprehensive grasp of incident consequences.

RS.AN-07 focuses on collecting and preserving incident data and metadata—such as source and timestamps—using chain-of-custody procedures to ensure integrity. This comprehensive gathering supports forensic analysis and compliance, protecting evidence from alteration. It ensures data remains a trustworthy resource for investigation.

This subcategory aligns with risk and legal requirements, safeguarding critical information for root cause analysis and reporting. It enhances response accuracy by maintaining a pristine data set for review. RS.AN-07 underpins robust incident analysis and recovery.

RS.AN-06 ensures that all investigative actions during an incident—like system checks or containment steps—are meticulously recorded, with integrity and provenance preserved. This involves immutable logs by responders and detailed documentation by the incident lead, safeguarding evidence for legal or audit purposes. It maintains a reliable investigation trail.

This subcategory supports accountability and forensics by ensuring records are tamper-proof and traceable, aligning with risk management needs. It enables accurate post-incident reviews and lessons learned, enhancing future responses. RS.AN-06 upholds the credibility of incident investigations.

RS.AN-03 conducts detailed analysis to reconstruct incident events, identify involved assets, and pinpoint root causes, such as exploited vulnerabilities or threat actors. This includes examining deception technologies for attacker behavior insights, aiming to understand both immediate triggers and systemic issues. It provides the foundation for effective response and prevention.

This subcategory enhances response by delivering actionable findings, aligning analysis with risk priorities to address critical weaknesses. It supports forensics and recovery by uncovering underlying causes, reducing recurrence risks. RS.AN-03 drives a thorough understanding of incident dynamics.

RS.MA-05 applies predefined criteria to determine when to shift from response to recovery, based on incident characteristics and operational considerations. This decision balances containment success with potential disruptions from recovery actions, ensuring a smooth transition. It marks the pivot to restoring normalcy.

This subcategory aligns recovery initiation with risk and operational priorities, preventing premature or delayed action that could worsen impacts. It ensures a deliberate, criteria-driven approach to recovery planning. RS.MA-05 facilitates a seamless move from mitigation to restoration.

RS.MA-04 ensures incidents are escalated or elevated to higher levels of authority or expertise when their complexity or impact exceeds initial handling capabilities. This involves tracking incident status and coordinating with designated stakeholders, both internal and external, for additional support. It maintains control over evolving incidents.

This subcategory aligns escalation with risk thresholds, ensuring timely involvement of senior leadership or specialists as needed. It enhances response flexibility by validating progress and adjusting resources dynamically. RS.MA-04 keeps incident management responsive to changing demands.

RS.MA-03 categorizes incidents—such as ransomware or data breaches—and prioritizes them based on scope, impact, and urgency, balancing rapid recovery with investigation needs. This detailed review assigns incidents to specific response strategies, ensuring appropriate resource allocation. It organizes chaos into actionable steps.

This subcategory aligns response efforts with organizational priorities, focusing on high-impact events while preserving evidence where needed. It supports strategic decision-making by classifying incidents systematically. RS.MA-03 optimizes the response process for efficiency and effectiveness.