DARIOM Lifecycle

DARIOM is a security operations and architecture lifecycle framework: Detect, Analyse, React, Investigate, Operate, Monitor. It provides a continuous-improvement loop for security posture management.

The six phases

Detect

Detection is the capability to identify that a security event has occurred or is occurring. Effective detection depends on:

• Visibility — logs, telemetry, and sensor coverage across all tiers
• Detection logic — SIEM rules, behavioural analytics, and threat intelligence correlation
• Mean Time to Detect (MTTD) — the primary metric; reduce it continuously

Detection sources include: endpoint telemetry (EDR), network flow data (NetFlow/IPFIX), DNS logs, firewall logs, proxy logs, cloud-native logging (CloudTrail, Azure Monitor), and application logs.

Analyse

Raw alerts are not findings. Analysis converts signals into actionable intelligence by:

• Triage: separating true positives from false positives
• Correlation: linking related events into an incident
• Context enrichment: adding asset, identity, and threat intelligence context
• Impact assessment: determining blast radius and business impact

React

React encompasses the immediate containment and initial response actions taken in the first hours of an incident:

• Isolate affected systems
• Revoke compromised credentials
• Block attacker-controlled infrastructure at the perimeter
• Preserve evidence for investigation

Investigate

Investigation answers: what happened, how, and to what? Key activities:

• Forensic triage (memory, disk, network captures)
• Attack path reconstruction using the kill chain or MITRE ATT&CK navigator
• Scope expansion — determine whether the breach spread laterally
• Root cause analysis

Operate

Operate covers the recovery and remediation phase:

• Rebuild or restore affected systems from known-good baselines
• Apply patches and close the vulnerability or misconfiguration exploited
• Validate recovery — confirm no persistence mechanisms remain
• Return to monitored production

Monitor

Monitor is the continuous posture-management phase that bridges one cycle to the next:

• Tune detection rules based on findings from investigations
• Measure KPIs: MTTD, MTTR, false positive rate, coverage gaps
• Update threat models to reflect new TTPs encountered
• Feed lessons learned back into architecture and design

DARIOM in practice

DARIOM is technology-agnostic — it describes what must happen rather than prescribing tools. Organisations typically map DARIOM phases to:

• SOC playbooks — structured procedures for each phase
• SOAR workflows — automated orchestration of detect → react
• ITSM integration — incident and change tickets tied to Operate/Monitor

Relationship to other frameworks

Framework	Overlap
NIST CSF (Identify, Protect, Detect, Respond, Recover)	DARIOM Detect/Analyse ≈ CSF Detect; React/Investigate ≈ Respond; Operate ≈ Recover
MITRE ATT&CK	Used during Analyse/Investigate to map adversary TTPs
PICERL (Prepare, Identify, Contain, Eradicate, Recover, Lessons)	Closely aligned; DARIOM adds Monitor as an explicit continuous phase

Further reading

• NIST SP 800-61r3 — Computer Security Incident Handling Guide
• SANS Incident Response Process
• MITRE ATT&CK Navigator