incident response

Incident response commonly refers to the organized set of processes, roles, and tools used to manage and resolve unplanned events that threaten normal operations, information security, safety, or regulatory compliance. In industrial and regulated environments, this typically focuses on cyber and operational technology (OT) incidents that could affect production systems, product quality, data integrity, or safety.

Core elements of incident response

Although specific models vary, incident response activities usually include:

• Preparation: Defining policies, playbooks, communication paths, responsibilities, and technical tooling (logging, monitoring, forensics).
• Detection and analysis: Identifying potential incidents from alerts, logs, user reports, or process anomalies, then triaging and confirming scope, impact, and severity.
• Containment: Limiting further impact, for example by isolating affected OT/IT assets, disabling user accounts, or switching to manual or degraded operating modes.
• Eradication: Removing root causes, such as malware, unauthorized changes, or misconfigurations, and restoring systems to a known-good state.
• Recovery: Safely returning systems and processes to normal operation, validating that they are stable, and monitoring for reoccurrence.
• Post-incident review: Capturing lessons learned, updating procedures, and improving controls, training, and system designs.

Incident response in industrial and regulated environments

In manufacturing, incident response must coordinate across OT, IT, quality, and compliance functions. Typical concerns include:

• Security incidents affecting PLCs, SCADA, MES, ERP, data historians, or network segments that control or monitor production lines.
• Events that may compromise data integrity in batch records, device history records, electronic logs, or quality systems.
• Incidents that could trigger deviation management, CAPA, or regulatory reporting, such as suspected tampering, unauthorized changes, or prolonged system outages.
• Maintaining safe states and verifying that any return to production does not bypass required checks, interlocks, or approvals.

Incident response processes are often integrated with change management, business continuity, disaster recovery, and quality management systems. Evidence collection and documentation are usually emphasized to support audits, investigations, and continuous improvement.

Relationship to cyber threat intelligence (CTI)

Cyber threat intelligence feeds, especially tactical and technical CTI, frequently inform incident response. Indicators such as malicious IPs, domains, file hashes, and TTPs (tactics, techniques, and procedures) can be used to:

• Improve detection rules and alert triage for OT and IT environments.
• Guide scoping, containment, and hunting activities during an active incident.
• Support post-incident analysis of adversary behavior and potential future exposure.

Common confusion

• Incident response vs. disaster recovery: Incident response covers the immediate handling of a specific event, including analysis and containment. Disaster recovery focuses on restoring IT/OT services after a major disruption, often using backups and alternate sites.
• Incident response vs. business continuity: Business continuity planning defines how to maintain critical operations during disruptions. Incident response is the concrete set of steps taken to address a specific incident that may trigger those plans.
• Incident response vs. problem management: In service management frameworks, problem management aims to find and address root causes to prevent recurring issues. Incident response deals with the active, time-sensitive handling of one incident, even when the root cause is not yet fully understood.