Digital Forensics & DFIR

Establish what happened from evidence that can be reviewed.

Focused forensic investigations across endpoints, servers, identity platforms and cloud services—designed to answer defined questions with traceable evidence and clearly stated limitations.

Investigative questions

Start with what the organization needs to know.

Digital forensics and incident response (DFIR) is most useful when the evidence collection and analysis are tied to clear questions.

  • Which systems and identities show confirmed relevant activity?
  • When did observable activity begin and how did it progress?
  • Which accounts, tools and execution paths were involved?
  • What changes were made to affected systems?
  • Which evidence supports each material conclusion?
  • What gaps prevent a firmer conclusion?

Investigation capabilities

Evidence across endpoint, server, identity and cloud.

The collection method is selected according to the investigative question, available telemetry, system condition and the risk of changing the source.

01

Windows forensics

Event logs, execution artifacts, registry data, scheduled tasks, services, user activity, persistence and file-system metadata.

02

Server & endpoint analysis

Focused examination supported by endpoint telemetry, security logs, system artifacts and targeted forensic acquisition.

03

Microsoft 365 investigation

Sign-in activity, audit events, administrative changes, mailbox rules, application consent and identity evidence.

04

Active Directory investigation

Privileged accounts, directory changes, authentication patterns, domain-controller evidence and unauthorized access indicators.

05

Malware triage

Controlled examination of suspicious files for relevant properties, observable behavior and investigation indicators.

06

Timeline reconstruction

Correlation of timestamps across sources with timezone, clock drift, rollover and retention limitations recorded.

07

Evidence integrity

Collection records, integrity hashes, acquisition notes and chain-of-custody records where appropriate to the engagement.

08

Technical reporting

Source, context, method, confidence and limitations retained so material findings can be reviewed.

09

Executive reporting

Material impact, supported conclusions and required decisions explained without overstating the evidence.

Evidence map

Different sources answer different questions.

No single log or artifact provides a complete account. Material conclusions are normally supported by correlation across available sources.

Illustrative evidence sources and common analytical constraints
Evidence areaQuestions it can supportCommon constraint
Endpoint & serverExecution, persistence, file activity and local account useArtifacts may change during cleanup, shutdown or continued use
IdentityAuthentication, privilege changes and administrative activityAudit settings, licensing and retention determine visibility
NetworkConnections, remote access and communication between systemsEncrypted traffic and incomplete logging can limit context
Cloud & SaaSSign-ins, configuration changes, application access and sharingProvider-specific retention and export availability vary

Investigation method

Traceable from question to conclusion.

  1. Frame the questions

    Define what the investigation must establish and which decisions it must support.

  2. Identify evidence sources

    Map available systems, logs, retention windows and access constraints.

  3. Preserve and acquire

    Record collection details and protect source integrity using proportionate methods.

  4. Correlate events

    Normalize time references and compare activity across relevant sources.

  5. Validate and report

    Seek corroboration, state limitations and present practical next actions.

Potential inputs

Evidence sources depend on scope.

  • Affected endpoints or servers
  • Forensic images or targeted collections
  • Endpoint security telemetry
  • Windows and application logs
  • Active Directory records
  • Microsoft 365 audit and sign-in data
  • Firewall, VPN and proxy logs
  • Suspicious files or indicator lists
  • Change records and response notes

Reporting standard

Conclusions should be no stronger than the evidence.

A significant finding should identify the affected asset, relevant time, evidence source, observed event, analytical interpretation and any limitation. Facts are separated from hypotheses.

Typical deliverables

  • Scope and evidence-source map
  • Acquisition and evidence register
  • Hash and integrity records where applicable
  • Correlated forensic timeline
  • System and identity findings
  • Confidence and limitation statements
  • Technical report and executive briefing

Forensics FAQ

Common investigation questions.

Is a full disk image always required?

No. The collection method depends on the questions, the system, available telemetry, time constraints and the risk of changing the source. Some investigations require full images; others can be answered through targeted acquisition.

Can a hash prove that a file executed?

No. A hash identifies a specific byte sequence and can support correlation. Execution requires additional evidence such as process, security, prefetch, endpoint or related system artifacts.

Can every investigation identify the exact initial access path?

Not always. Conclusions depend on the quality and retention of evidence. Reporting distinguishes confirmed evidence, the most consistent explanation and alternatives that cannot be excluded.

How is confidential evidence transferred?

The public form is not used for evidence. A controlled transfer method and authorized recipients are agreed after the initial engagement discussion.

Next step

Need an investigation that answers a defined question?

We can help identify the evidence sources, scope the work and set realistic expectations before acquisition begins.

Discuss a Forensic Investigation