Digital Forensics and Digital Evidence Services

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Digital Forensic Services

For over 20 years, NSI Global has provided digital forensic services, digital forensic incident response, cyber incident investigation, electronic evidence preservation and forensic analysis for corporate organisations, government agencies, law enforcement bodies, law firms, insurers, regulators and authorised case-managed matters.

Digital forensics is the specialist process of identifying, preserving, extracting, analysing and reporting on data from electronic devices, cloud accounts, communications platforms and digital systems in a forensically sound manner.

When to engage NSI Global

  • An employee may have copied or deleted confidential files.
  • An email, message, photograph or timestamp is disputed.
  • A device or account contains records needed for a legal matter.
  • The explanation given after a cyber incident needs independent examination.

 

NSI Global’s forensic practice is led by Navid Sobbi. In Wheatley v Peek [2025] NSWCA 265, the Court recorded that he examined the iPhone as a joint court-appointed expert and that his evidence was not disputed. His profile links to the published record and describes his qualifications and work.

NSI Global’s digital forensic work is conducted by experienced specialists, including legally qualified and court-experienced forensic examiners who understand the technical, legal, evidentiary and security requirements involved in sensitive investigations. We have supported criminal prosecutions, internal corporate investigations, civil litigation, and family law matters.

Our team assists in matters involving cyber incidents, business email compromise, ransomware, insider threat, employee misconduct, intellectual property theft, unauthorised access, spyware, malware, deleted data recovery, mobile devices, cloud accounts, eDiscovery, litigation support and evidence preservation.

For domestic violence, family law, child safety, criminal, civil, protection-order or other sensitive legal matters, NSI Global must be instructed through an appropriate lawyer, case officer, investigator, insurer, agency, recognised support organisation or authorised representative. Access to devices, accounts and records requires an appropriate lawful basis.

What the engagement provides

The agreed report identifies the material examined, methods used, relevant findings and limitations. Where supported by the evidence, it includes a chronology and references to the underlying records. Expert reporting and testimony are separately scoped where required.

What Is The Unique NSI Digital Forensic Methodology?

Our Key Digital Forensic Services include:

When a disputed message, missing file or suspected data theft could affect a legal or business decision, NSI Global examines the available digital evidence. We identify relevant sources, preserve and analyse accessible data, and explain what the findings support and what remains uncertain.

Our examiners select forensic tools and acquisition methods according to the device, available data and questions being investigated. Tools used by NSI Global include Cellebrite, Oxygen Forensics, MobilEdit and X-Ways, where appropriate to the examination.

We document the methods used, relevant integrity checks, evidence handling and technical limitations. Depending on the device and access available, examination may involve a forensic image, a targeted extraction or other supported acquisition methods.

Digital Forensic Incident Response (DFIR)

DFIR support for cyber incidents, data breaches, compromised accounts, ransomware, malware, insider threat, unauthorised access and evidence preservation.
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Digital Forensic Data Recovery

Forensic recovery of deleted, lost or inaccessible data from mobile phones, smart watches, computers, tablets, external drives, servers, cloud accounts and other digital sources where lawful authority exists.
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Forensic Spyware and Malware Detection

Detection and analysis of spyware, malware, remote access tools, suspicious applications, persistence mechanisms and indicators of device or system compromise.
Forensic Spyware and Malware Detection

Social Media and Cloud Forensics

Forensic preservation and analysis of cloud accounts, social media platforms (Facebook, Instagram, etc.), messaging applications (WhatsApp, Signal, Telegram, etc.), email accounts and online services.
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Computer and Hard Drive Forensics

Forensic imaging and analysis of laptops, desktops, servers and endpoints to examine user activity, deleted files, USB usage, browser history, logs, metadata and system artefacts.
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Investigative Link Analysis & Data Analytics

Once evidence is collected, we connect it. Our analysts correlate data across multiple sources and devices to map relationships, reconstruct timelines, and surface links between people, entities, and events that would otherwise stay hidden.
Investigative Link Analysis and Data Analytics

eDiscovery and Litigation Support

Electronic discovery, forensic reporting, affidavit support and expert evidence for law firms, insurers, regulators, courts and authorised investigative matters.
Advanced Electronic Discovery

Why Clients Choose NSI Global

Fast Preservation

A suspected breach or compromise is a high-stress situation. Our team moves quickly to preserve evidence before it's lost or altered, giving you clarity on what happened and what to do next.

Prepared for Scutiny

Our team includes legally qualified and court-experienced forensic experts who understand the importance of evidence integrity, chain of custody, expert reporting, affidavit preparation, procedural fairness, privilege, privacy, admissibility considerations and the duties that may apply to expert witnesses.

Instructed since 2004

NSI Global has provided digital forensic evidence on instructions from law firms, prosecuting authorities, law enforcement, insurers and corporate clients.

Discuss the evidence you need examined.

Digital evidence that isn’t preserved forensically at the outset can be challenged or excluded later — so early, correct handling matters, whether the matter is a cyber incident, a compromised account, suspected insider activity, deleted evidence or intellectual property theft.

NSI Global’s forensic practice is led by our founder, Navid Sobbi — who has given expert evidence in Australian courts — and delivered in-house by credentialed examiners, for corporate, legal, government, law enforcement, insurance and regulatory clients across Australia. Where a matter involves personal safety, including family law or domestic violence, we recommend engaging through your legal representative or case officer.

Contact NSI Global from a secure device or trusted environment.

1300 000 NSI (674)

Frequently Asked Questions

Is digital forensic evidence admissible in Australian courts?

Admissibility is determined by the court, not by the examiner or the tool used. What a forensically sound methodology and a defensible chain of custody do is put the evidence in a form the court can accept and the other side can test. That is the standard NSI Global's process is built around.

What's the difference between digital forensics and standard data recovery?

Standard data recovery focuses on retrieving lost files. Digital forensics goes further — preserving evidence under documented chain-of-custody procedures, documenting the process, and producing findings suitable for court, regulatory, or investigative use.

How quickly should a forensic expert be engaged after a suspected breach?

As early as possible. Evidence on live systems and devices can be altered or lost through normal use, which is why early, forensically sound preservation is critical to protecting what's recoverable.

Can NSI Global assist with domestic or family law matters?

Yes, where the matter is engaged through a legal representative or case officer, ensuring the right protections are in place for all parties involved.

Does NSI Global work with law enforcement and government agencies?

Yes. NSI Global has provided digital forensic services to government departments, law enforcement, law firms, and corporate organisations across Australia for over 20 years.

What happens after a digital forensic examination?

You receive a comprehensive report detailing the findings, methodology, and chain of custody, prepared to a standard suitable for legal or litigation use where required.

Legal Disclosure

NSI Global conducts digital forensic work in accordance with applicable privacy, surveillance, evidence, computer access and data protection laws.

NSI Global requires lawful authority, owner or organisational consent, legal instruction, court order, regulatory authority or another appropriate basis before accessing devices, accounts, cloud data, communications records or digital evidence.

All evidence handling is conducted using evidence-aware procedures, including chain-of-custody documentation, forensic acquisition, cryptographic hashing and appropriate privacy controls where required.

NSI Global will not accept any instruction, assignment or engagement from an individual or entity that is the subject of a law enforcement investigation.

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