Digital Forensics & Incident Investigation

Our Digital Forensics services help you investigate cyber incidents, recover critical data, and gather legally admissible evidence for internal or external proceedings.

Digital Forensics & Incident Investigation

ReactiveZero's Digital Forensics services provide expert investigation capabilities to respond to cyber incidents, uncover evidence, and understand the root cause of security breaches. Our certified investigators help you navigate complex digital environments to support legal proceedings, internal inquiries, and data recovery efforts.

Chain of custody

How We Run an Investigation

Every action on your evidence is timestamped, hashed and countersigned, so the findings hold up in front of counsel, regulators and a court.

Evidence custody log
Case ref.██████-██
  1. LoggedT+0h
    Evidence IDEV-001

    Triage & Preservation

    We capture volatile memory and network state first, then isolate affected hosts without powering them down or destroying evidence.
    You receiveScoping & hold notice
    HandlerJ.V.
    SHA-2569c2e17…b04d
  2. LoggedT+4h
    Evidence IDEV-002

    Forensic Acquisition

    We take write-blocked, bit-for-bit images of disks and handsets, export cloud audit logs and snapshots, and hash everything with SHA-256 on acquisition.
    You receiveVerified images & hash list
    HandlerM.K.
    SHA-2564fa1d3…77e2
  3. LoggedT+2d
    Evidence IDEV-003

    Timeline Reconstruction

    Filesystem metadata, event logs, registry hives, browser history and mail stores are merged into one super-timeline of what happened when.
    You receiveInterim findings brief
    HandlerJ.V.
    SHA-256e08b5c…1a9f
  4. LoggedT+5d
    Evidence IDEV-004

    Root Cause & Impact

    Recovered tooling is reverse-engineered, persistence and lateral movement mapped, and exfiltrated data identified so you know exactly what left.
    You receiveIndicator set & exposure register
    HandlerS.B.
    SHA-25671d4aa…c3e6
  5. LoggedT+10d
    Evidence IDEV-005

    Reporting & Testimony

    Two reports: an executive summary for the board and an evidential report for counsel, with exhibits, hashes and expert-witness support.
    You receiveEvidential report pack
    HandlerM.K.
    SHA-256b6f209…58d1
All entries sealed
Write-blocked acquisition · SHA-256 · UTC

Types of Forensic Investigations

Data Breach Investigations

After a breach, you need to know exactly what happened before you can report it or recover. Our investigators establish how the attacker got in, which systems and accounts they touched, and — crucially — what data was accessed or exfiltrated. We acquire and analyse disk, memory, cloud and log evidence under a documented chain of custody, then reconstruct a defensible timeline. The findings give your leadership, legal counsel and, where required, the Autoriteit Persoonsgegevens a clear, evidence-based account for GDPR breach-notification decisions.

Insider Threat Investigations

When the risk comes from inside, discretion and rigour matter equally. We investigate suspected data theft, sabotage, policy violations and negligent handling by employees or contractors, working carefully to preserve evidence and respect employment and privacy law. By correlating endpoint, email, file-access and cloud activity, we reconstruct what an individual did and when, under a chain of custody that holds up in a disciplinary or legal setting. You receive a clear, factual report your HR, legal and management teams can rely on to act with confidence.

Network Intrusion Analysis

When an intruder reaches your network, we determine how they got in and everything they did next. Analysing firewall, proxy, VPN, endpoint and server logs alongside captured traffic, we identify the initial entry point, the lateral movement, the accounts and systems compromised and any persistence left behind. We map the activity to the MITRE ATT&CK framework so the story is clear and actionable. The output supports containment, eradication and hardening, and feeds directly into our incident response team when an active intrusion must be shut down fast.

Mobile & Cloud Forensics

Evidence increasingly lives on phones and in cloud tenants rather than on a single laptop. We perform forensic acquisition and analysis of iOS and Android devices and of cloud environments such as Microsoft 365, Google Workspace, AWS and Azure — recovering messages, app artefacts, access logs and audit trails while maintaining a defensible chain of custody. This is essential for investigating account takeover, business email compromise and insider activity. You receive clear findings and, where needed, expert reporting suitable for legal counsel, insurers or regulators.

Get in Touch

Ready to strengthen your security posture? Let's discuss how we can help protect your organization.