Expert Witnesses, Neutral Examinations and Rebuttal Analysis
Retained Experts and Neutral Examiners for Technology Disputes
Some technology disputes need a retained expert who can explain a database, a repository, a mailbox or a phone to a jury, and others need one neutral examiner whose record both sides and the court will accept. Global Digital Forensics provides both, examining the evidence under documented methods or an agreed protocol and delivering the report, the rebuttal or the neutral findings the matter calls for. Our work has been accepted by federal and state courts, and the first consultation is free.
Neutral Examinations Under a Protocol Both Sides Accept
When the parties cannot agree on what a device or an account contains, a court appointed or jointly retained neutral examination replaces two competing stories with one record. Before anything is collected we establish the appointment or protocol authority, conflicts, the permitted evidence and access, the questions to be examined, the communications rules and the report recipients, and we write down how disputes about scope will be resolved. Recording the instructions and every approved change gives each party, and the court, a clear account of the assignment.
We state at the outset whether the examiner represents a retained party or serves as a neutral, because the two roles carry different communications and distribution expectations and the credibility of a neutral depends on never blurring them. Requests that go beyond the agreed authority, and disputes about access, return to the parties or the appointing authority for resolution rather than being decided by the examiner.
The same discipline applies to specialized records. For maritime matters we can examine navigation files, timestamps, configuration and software behavior, and we confirm the relevant maritime qualifications and scope separately when the assignment calls for opinions on collision reconstruction, navigation practice or vessel operation. A neutral who stays inside the protocol is worth more to the court than one who answers every question the parties put forward.
If the parties are still drafting the protocol, ask us to review the draft before it is signed, so the scope, access and communications rules are ones an examiner can actually follow.
The Examiners Who Explain the Findings
Global Digital Forensics has operated since 1992 and serves AmLaw 100 law firms, Fortune 500 companies and small and midsize businesses. Joseph Caruso, founder, CEO and CTO, brings database, source code and technology dispute experience that includes consulting expert work in Motorola Mobility v. Microsoft and Apple v. Samsung, and a federal court accepted him as an expert in computer forensics and computer science. Veronica Perez has been designated as a digital forensics expert witness in California, Oklahoma and South Carolina state courts and in federal court in Chicago. Robert Knudsen has conducted hundreds of computer and mobile device examinations supporting federal and state court matters. We match the technical questions to the practitioner and provide the current CV for counsel to assess.
Ask which examiner would take the stand and request a current CV and conflicts check.
The engagement
Expert Analysis That Makes Complex Evidence Clear to the Jury
An expert opinion earns its place when a judge can trace it from the original records to the technical conclusion without a leap in between. We connect system behavior, records and events to the disputed questions, then prepare expert reports, opposing expert reviews, deposition materials, affidavits, declarations and trial testimony, and the examiner who did the analysis is the one who explains it.
Our clients include AmLaw 100 law firms, Fortune 500 companies and small and midsize businesses, and the practice has worked in federal district court, multidistrict litigation, arbitration and ITC Section 337 proceedings. We work with the retaining firm to identify the expertise the matter requires and to develop reports and exhibits that make the technical evidence understandable without making it less accurate.
Disputed email: COMLAB v. Kal Tire. Joseph Caruso examined email and document metadata and a claimed computer virus explanation for missing native files, then testified at an evidentiary hearing in the Southern District of New York. The court found his experience impressive and his testimony reasonable, logical, and ultimately highly credible, concluded that the disputed emails had been fabricated, dismissed the action with prejudice and awarded reasonable fees and costs to Kal Tire. Read the case and the court’s findings.
Biometric records: Rogers v. BNSF Railway. Plaintiffs’ counsel retained GDF as database, data analysis and computer forensics experts in the first BIPA class action to reach a jury trial. We restored, normalized and deduplicated the biometric system database records so the data could be understood as evidence. The jury found 45,600 violations and the court entered a $228 million judgment, later vacated the damages award and ordered a new trial on damages, and the parties’ settlement provides a $75 million fund. Read the full case history and GDF’s role.
Explore the specialties beside this overview for the evidence and technology in your matter, including embedded devices and maritime navigation records.
Scope
Technology Expert Witness
We explain system design, functionality and the technical events behind a commercial or product dispute in terms a judge and jury can follow. Explore technology expert witness.
Software and Intellectual Property
We examine source code, development history, access and software behavior in patent, trademark and trade secret matters, then explain the findings in the context of the dispute. Explore source code expert witness work.
Computer Forensics Expert Witness
We extract data, correlate events, build timelines and map relationships so the legal team can see how the digital evidence fits together and where it does not. Explore computer forensics expert witness.
Email, Social Media and Internet Technologies
We examine disputed communications, trace email activity and connect messages, attachments, accounts and online records to the events in dispute. Explore email and Microsoft 365 forensics.
Biometrics and BIPA
We explain biometric collection, system operation and database records, including the technical basis for the counts and relationships presented in a BIPA matter. Explore biometrics and BIPA.
Databases and Cloud Storage
We reconstruct transactions, examine access and changes, and turn complex database and cloud records into findings an attorney can present. Explore database expert witness work.
Mobile Devices and Cellular Networks
We connect messages, device activity, location evidence and cellular network records into the chronology the case needs. Explore wireless technology expert witness work.
Embedded Systems
We examine how firmware, software and hardware work together and explain device behavior, configuration and recorded events in product and technology disputes, including how a configuration, a sensor input or a software instruction relates to a recorded event. Get a Free Consultation.
We examine navigation system records and explain how recorded positions, times, configuration and system behavior relate to the events in dispute, including how timestamps align across systems. Discuss maritime navigation records with an examiner.
Methodology
From Complex Evidence to a Clear Expert Opinion
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Understand the case
We discuss the disputed technology, the available records, the deadlines, the case strategy and the required expertise with counsel, or the protocol with the parties and the court, so the assignment addresses the questions that decide the case.
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Examine the evidence
We examine the relevant evidence with documented methods, test the technical questions and preserve the supporting workpapers, giving the legal team a traceable basis for evaluating the opinion and for answering a challenge to it.
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Prepare the explanation
We build reports, timelines and exhibits that connect the findings to the issues in dispute, with source references clear enough that the attorneys, the court and the opposing expert can follow the reasoning from exhibit to record.
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Prepare for deposition, hearing or trial
We prepare with counsel for deposition, hearing or trial testimony, explaining the methods, the evidence and the conclusions in language the audience can follow, and the examiner who did the work is the one who takes the stand.
Litigators who want these four stages laid against a scheduling order can call (800) 868-8189 and talk them through with the examiner who would do the work.
Evidence commonly examined
Technical Evidence Your Expert Examines
Forensic images and examiner workpapers show what was collected and how any prior examination was conducted, while native files and metadata test the origin, timing and relationships of the records in dispute. Tool reports and validation material show how a result was produced, discovery protocols and collection records define the handling instructions and collection history, source logs and system documentation relate recorded events to how the technology operates, and the opposing reports, declarations and exhibits identify the opinions and material we need to examine.
What you can expect
Your Reports, Exhibits and Testimony Support
You receive the agreed expert reports, declarations or affidavits with findings tied to the supporting evidence, together with opposing expert analysis and rebuttal reports that help trial teams prepare technical deposition topics and test the other opinion. Timelines, demonstratives and evidence exhibits make technical relationships and sequences easier to explain, and the assignment can include deposition, hearing or trial testimony or a neutral examination report under the governing protocol.
Send us the opposing report or the protocol draft and we will tell you which of these deliverables the matter calls for. Describe the case to us to begin.
Choose Between a Retained Expert and a Neutral
Bring the disputed question, the available sources and the deadline to a free initial consultation. We will review relevant experience, conflicts and whether the matter calls for a retained expert or a neutral examiner, so the engagement is defined before anything is transferred.
Read the Rogers v. BNSF Railway case study to see how retained database analysis was reported in the first BIPA class action to reach a jury, then review the team your assignment would draw on.
Get a Free ConsultationFrequently asked
Reports, Rebuttal, Testimony and Neutral Roles
Where can I find a technology expert who can explain complex concepts to judges and juries?
Global Digital Forensics has provided technology expert witnesses for decades, and our examiners have been accepted by federal and state courts. We make complex evidence understandable through clear reports, exhibits built from the records themselves and testimony that connects the technology to the facts of your case.
Can you prepare an expert report, affidavit or declaration?
Yes. Our experts prepare reports, affidavits and declarations that explain the questions examined, the methods used, the findings and the supporting evidence, with workpapers retained so the work can be checked. We coordinate with counsel on the assignment and the reporting deadlines.
Can you review the opposing expert’s report?
Yes. We review the underlying evidence, methods, assumptions and conclusions, test whether the disputed inference can be reproduced and help the trial team understand the technical issues. That work supports rebuttal reports, deposition preparation and cross examination of the opposing opinion.
Can you provide deposition and trial testimony?
Yes. GDF experts provide deposition, hearing and trial testimony, and the examiner who did the analysis is the one who testifies. We explain the technical work in plain English and use the supporting records and exhibits to help the audience follow the findings.
What case results demonstrate your experience?
Our published examples include the biometric database analysis in Rogers v. BNSF Railway, the first BIPA class action to reach a jury trial, which later resolved through a $75 million settlement, and Joseph Caruso’s testimony in COMLAB v. Kal Tire, where a federal court found his testimony highly credible, dismissed the action with prejudice and awarded fees and costs. The case studies explain our work and the outcomes.
Do you work with smaller firms and businesses?
Yes. Our clients include AmLaw 100 law firms, Fortune 500 companies and small and midsize businesses. We discuss the technical questions, the scope and the resources available to identify the expert support the matter actually needs, and the first consultation is free.
Can you serve as a neutral examiner?
Yes. We conduct court appointed and jointly retained neutral examinations under an agreed protocol or court order. The protocol defines the scope, permitted access, evidence handling, communications and report distribution so every party and the court understands how the work will proceed before it begins.
Talk with an examiner
Review the protocol draft before it is signed
Tell us which technology is disputed, whether the matter calls for a retained expert or a neutral examiner, and when the work is needed. We will review practitioner experience, conflicts and the proposed assignment with your team.
Serving law firms since 1992 with examiners accepted by federal and state courts and a 24/7 hotline.
Talk with an examiner
Retain a Technology Expert the Court Can Follow
The first conversation settles whether the matter needs a retained expert or a neutral, what the protocol or engagement letter should cover and who would carry the work through the next deadline, and it costs nothing.
24/7 hotline: (800) 868-8189
Core Analysis for Departures and Business Separations
GDF Core Analysis provides a flat rate forensic examination within an agreed scope, preserving departure or separation evidence and producing an activity timeline that business leaders and their attorneys can act on before a disagreement becomes litigation.
Employee Exit Core Analysis preserves agreed employee departure evidence and explains computer, email, cloud and AI activity at a flat rate. Executive Departure Core Analysis examines agreed executive computer, email, cloud and AI activity with flat rate preservation and clear reporting for leadership. Business Partner Separation Core Analysis preserves agreed email, file, cloud storage and AI records when business partners separate, with a flat rate forensic examination.
GDF does not accept pro se litigation cases, and GDF may decline matrimonial or family law cases at our discretion.
Reviewed by Joseph Caruso, Founder, CEO and CTO, CISSP. Last reviewed .