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Understanding SIRP

A Security Incident Response Platform (SIRP) gives responders one structured workspace for coordinating security investigations and preserving their history.

What you will learn

By the end, you should be able to explain how an alert becomes a case, assign a justified initial priority, identify the records a useful case requires, and choose a suitable case-management platform.

What is a SIRP?

Core concept

A SIRP is the coordination and system-of-record layer for incident response. It keeps the people, evidence, tasks, decisions, approvals, and outcomes for an investigation together so another authorised responder can understand and continue the work.

CasesEvidenceTasksDecisionsOutcomes

Keep in mind: A SIRP creates structure and accountability, but it does not prove that an alert is an incident. Responders still need to validate evidence and apply judgement.

CaseThe structured record for an investigation ObservableAn account, address, domain, hash, or device worth examining TaskAn assigned action with an owner and status

What a SIRP is not

SIRPCoordinate cases, people, evidence, and decisions
SIEMCollect events, correlate activity, and create alerts
SOAROrchestrate repeatable actions across tools
Forensic storagePreserve specialist evidence and examination artefacts
Incident leadershipOwn business, legal, and operational decisions

Connected, but not interchangeable

A SIRP may connect to SIEM, SOAR, and forensic tools. It coordinates their evidence and work, but it does not replace their specialised functions or create a reliable response process by itself.

What does a SIRP do?

Manage cases

Record incident details, severity, status, evidence, observables, and investigation history in one place.

Coordinate people

Assign owners and tasks so responders understand responsibilities, deadlines, and hand-offs.

Standardise workflows

Apply repeatable case templates, task sets, checklists, approval points, and closure requirements.

Preserve decisions

Maintain an auditable history of evidence, actions, approvals, and outcomes throughout an investigation.

How SIEM, SIRP, and SOAR connect

These technologies often work together, but they solve different primary problems.

SIEM Detect Collects events, correlates activity, and generates alerts.
SIRP Coordinate Creates cases, assigns work, and preserves investigation context.
SOAR Automate Orchestrates repeatable actions across integrated tools.

Note

Product categories overlap. A single platform may include detection, case-management, and orchestration features; the labels above describe their primary roles.

Incident-response lifecycle

  1. IntakeAlert intakeReceive an alert or manually report suspicious activity.Owner: monitoring team
  2. IntakeTriageValidate the alert, assess impact, and assign an initial priority.Owner: triage analyst
  3. InvestigateCase creationRecord the scope, evidence, observables, ownership, and response targets.Owner: case owner
  4. InvestigateInvestigationBuild a timeline, test hypotheses, and establish affected systems and identities.Owner: investigator
  5. RespondContainmentLimit further harm using approved and documented response actions.Owner: incident lead
  6. RespondRecoveryRemove the cause, restore services, and monitor for recurring activity.Owner: response team
  7. ImproveClosureConfirm tasks and evidence are complete, then record the final outcome.Owner: case owner
  8. ImproveLessons learnedImprove detections, controls, playbooks, and training using case findings.Owner: security leadership

Try incident triage

Open an alert, review every evidence record, assess the response factors, and create a defensible initial case decision.

Try it: turn an alert into a case

Complete all three scenarios. Review every evidence record, select the factor values supported by that evidence, choose an initial priority and next action, then submit your decision. The goal is consistency and justification—not simply choosing the most severe response.

Incident triage workspaceScenario 1 of 3
Alert awaiting triageSuspicious privileged-account activityRepeated failures were followed by a successful sign-in and unusual PowerShell activity on a finance workstation.
Business impact
Evidence confidence
Asset criticality

Simplified teaching model: factor values are added equally. Scores 0–1 suggest P4, 2–3 P3, 4–5 P2, and 6 P1. Your organisation’s definitions and escalation rules take precedence.

Suggested initial priority
Next action
Exercise debrief

Priority is only the start of case management. The privileged-account and service-disruption scenarios can both justify P2, but they require different next actions because their evidence and uncertainty differ. A useful SIRP records the supporting evidence, rationale, owner, approval boundary, and next review point—not only the priority label.

Human judgement remains essential

A scoring model supports consistency; it should not make the final decision alone. Analysts must consider safety, legal obligations, active attacker behaviour, intelligence, and information that the model does not capture.

Anatomy of a case

The case record keeps investigation context available to everyone involved. Expand the areas below to inspect a simplified example.

P2 Suspicious privileged-account activityCASE-2026-071 · Investigation in progress OwnerIncident Response
Observables and evidence

User account, source IP address, affected workstation, identity logs, endpoint telemetry, and an evidence hash with collection details.

Tasks and ownership

Validate account activity, preserve endpoint evidence, review authentication history, assess affected access, and obtain approval for containment.

Timeline and decisions

Every alert, analyst note, status change, action, approval, and result is time-stamped so another responder can reconstruct the investigation.

Closure requirements

Confirm containment and recovery, classify the incident, record impact, complete mandatory notifications, and capture detection or playbook improvements.

What makes a SIRP useful

Start with a response question

Can another responder understand what happened, what was decided, and what happens next?

  1. 1Define intakeAgree which alerts and reports become cases.
  2. 2Require contextCapture evidence, scope, priority, owner, and uncertainty.
  3. 3Control actionAssign tasks and approval boundaries before disruptive steps.
  4. 4Verify closureRecord recovery, outcomes, and improvements before closing.
Plan for operational friction
Unclear ownershipMissing evidenceStale integrations Unsafe automationInconsistent prioritiesPremature closure

Track time to acknowledge and contain, but also review reopened cases, incomplete tasks, failed integrations, and response outcomes. Fast closure is not automatically good response.

Solutions in this kit

TheHive and DFIR-IRIS both support collaborative case management, but their emphasis differs. Choose the workflow that best matches the evidence and coordination needs of your first lab.

Alert-led casework

TheHive

Choose it when: Collaboration, task ownership, and observable management are the main goals.

Workflow: Alert intake, case creation, tasks, decisions, and closure.

Strength: Cases, observables, analyst collaboration, and an established security-operations ecosystem.

Confirm the features, connectors, deployment model, and licensing for the version you intend to use. Evidence-led investigation

DFIR-IRIS

Choose it when: Evidence provenance, affected assets, timelines, and reporting are central.

Workflow: Define scope, track assets and evidence, build the timeline, and report findings.

Strength: Detailed timelines, evidence and asset tracking, reporting, access control, and integrations.

Plan evidence retention, backups, integrations, workflow design, and ongoing maintenance.

Choose one case path first

Start with TheHive for alert-led collaboration or DFIR-IRIS for an evidence-led investigation record. Add integrations only after the basic intake-to-closure workflow is measurable and repeatable.

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