Digital Forensics and Incident Response (DFIR)

Overview

Digital Forensics and Incident Response (DFIR) is the coordinated practice of detecting, containing, investigating, eradicating, and recovering from incidents while preserving and analyzing digital evidence. The control exists to reduce the likelihood and impact of compromise by making assets, identities, software, data, exposures, and control responsibilities visible and governable. It combines operational response with forensic discipline and is broader than post-incident evidence collection alone. It should be interpreted alongside Crypto Forensics because the concepts can affect the same decision without representing the same control, event, or risk.

The workflow identifies the protected object and owner, evaluates threats and dependencies, applies preventive and detective safeguards, and routes exceptions or failures to accountable teams. Controls should be tested against realistic misuse, version changes, privileged access, third parties, and recovery conditions. In this context, a capable program defines authority, triage, evidence handling, time synchronization, acquisition methods, legal and privacy requirements, containment choices, communication, recovery validation, root-cause analysis, lessons learned, and secure retention of case materials.

It should connect the term to Audit Log where that relationship changes access, transaction treatment, investigation, communication, or recovery.

Records should preserve scope, ownership, configuration or policy version, changes, approvals, test results, alerts, exceptions, incidents, remediation, and verification that the risk was reduced. Evidence must be protected from alteration and retained according to legal and operational need.

Useful measures include coverage, control effectiveness, unresolved critical findings, remediation age, unauthorized changes, detection time, incident frequency, repeat weaknesses, exception volume, and recovery performance.

The relationship with Backup and Restore should be documented where it affects residual risk or control ownership.