Chicagoland Computer Forensics, OT Evidence and Expert Testimony
One Timeline From the Loop to the Loading Dock
A Chicago company keeps its headquarters downtown, its plants and warehouses in the suburbs and its email administered somewhere else again, so one departure or one breach leaves evidence at every site. Global Digital Forensics preserves the laptop, the mailbox, the warehouse system and the remote support log, then reconciles their clocks into a single chronology of what happened. The examiner who builds it explains it in the Northern District of Illinois or the Circuit Court of Cook County.
Preserve Once, Not Office by Office
Reach the Chicago office at (312) 589-3299, or the 24/7 hotline at (800) 868-8189 when a plant system is down or a laptop is about to be reimaged overnight.
For a Chicago area business with several offices or facilities, the person leaving and the records administrator are often in different places, and the company devices, the shared applications and the contacts responsible for email and storage are scattered accordingly. GDF coordinates those evidence sources into one examination plan, so preservation happens once for the matter rather than being improvised location by location while the employee's laptop sits in a drawer waiting to be reimaged.
When a matter spans business and operating teams, tell us precisely which information is at issue: customer records, commercial files, engineering documents or account access. We preserve the relevant sources and organize the events for counsel while the business continues its offboarding and operating responsibilities, and if the dispute goes to court, the examiner who did the work is the one who explains it.
Fixed Price Reviews and Contested Examinations
Start with flat rate employee exit Core Analysis for an agreed scope, or move directly to a full trade secret forensic examination when the matter is already contested.
For an officer or an owner, the executive departure and partner separation analyses cover the business records, the account authority and the decisions the examination should support.
One Report for Counsel and the Board
We identify the people, devices, accounts and administrators at each location, run the authorized collections in parallel and correlate the activity into one report written for counsel and business leadership alike.
Office Email on One Side, Plant Systems on the Other
World Business Chicago names manufacturing, transportation and logistics, fintech, and life sciences and healthcare among the region's key industries. That mix means a single dispute can involve enterprise email on one side and warehouse systems, control networks or remote support sessions on the other, and the two kinds of record are owned, retained and timestamped differently. We separate enterprise evidence from operational system data and identify which organization controls each record before anything is collected.
World Business Chicago, the city's economic development agency
Tell us whether the record you need lives in the office, on the plant floor or with a vendor, and the Chicago office will sort out who controls it before anything is collected.
Departures, Plant Events and Expert Review
Employee departures and shared systems
We correlate issued computers, removable device artifacts, cloud sharing, email and repository access around the relevant dates. A copied file or an account login becomes evidence of use or disclosure once it is placed in context, so we preserve the source record, show what surrounds each event and record where retention ran out.
Departing employee analysis in detail
Manufacturing and logistics evidence
Operational events can span workstations, warehouse systems, remote support sessions and control networks, so we record the time sources and the system ownership before comparing a single timestamp. For an assessment we agree in advance how each proposed check could affect production, what monitoring is already in place and who has the authority to stop the work.
Critical infrastructure and OT security in detail
Commercial litigation and expert review
An expert examination distinguishes what an artifact shows from the interpretation placed on it. We identify the source, the acquisition method, the relevant software versions and the alternative explanations, and we answer each alternative in the report before opposing counsel raises it. Veronica Perez, Senior Computer Forensic Specialist, has been designated as a digital forensics expert witness in federal court in Chicago.
Computer forensics expert witness services in detail
Most matters straddle two of these. Describe it to a senior examiner and we will scope it as one engagement.
Services Delivered Across Chicagoland
Each service below is delivered to Chicago and its suburbs by the same practice that has served counsel and businesses since 1992. Remote collection handles mailboxes, cloud tenants and phones where the source allows it, examiners travel from sixteen US offices for device handoffs and plant visits, and reports are prepared for the federal and state courts in which the matter is filed. Behind them stands an expert practice with federal district court, multidistrict litigation, arbitration and ITC 337 experience and examiners holding the CISSP, EnCE, CCE and CHFI credentials listed on our About page.
- Computer and hard drive forensics
- Mobile device forensics
- Email and cloud evidence
- Expert witness support
- Penetration testing
- Vulnerability assessments
- Application penetration testing
- Ransomware and data breach analysis
- eDiscovery collections
- Departing employee analysis
- Evidence aware data recovery
- OT and SCADA security
- AI security consulting
Setting Up a Chicago Engagement
List the custodians and facilities involved, the systems they use, any outside administrators and the deadlines that affect preservation or testimony, then call (312) 589-3299 or (800) 868-8189. On that first call a senior examiner tells you whether to start with a remote export, a controlled device handoff or a plant visit, checks conflicts, and agrees the transfer method before any confidential material is sent. The consultation is free and handled in confidence.
While you assemble that list, read the answers counsel usually want about cost and timing.
Keep Every Source Clock Visible in the Timeline
For a multiple office examination we identify the user, the location and the authorized owner of each workstation, shared drive, warehouse system and remote support record, and we confirm access, secure transfer and any scheduled site visit before collection starts. The first coverage register shows, for example, a workstation already collected, a warehouse export pending vendor approval and a remote session log that was never retained, so counsel knows the state of the evidence rather than assuming it.
The resulting timeline keeps source identifiers and clock differences visible instead of merging everything into an unexplained sequence. Each source is mapped to its owner, its retention and its collection method, employee files and account events are compared with the relevant business or operational record, the register notes which records were supplied, collected directly or unavailable, and any access to a control network is scheduled with the plant's operator so production keeps running.
When several offices hold pieces of the same event, (800) 868-8189 is the one number to call, and the examiner who answers will start the coverage register with you.
Read Before Anyone Touches the Evidence
Before IT reimages anything, read the short guide to digital evidence preservation mistakes, then see our digital forensics questions and the forensic examination process. For an active incident, call (800) 868-8189.
Frequently asked
Chicago Counsel and Operations Leaders Ask
Can you separate business records from unrelated employee data?
Yes. The collection plan limits custodians, sources, dates and categories to what the matter needs, which protects employee privacy and keeps review costs down, and the report records that scope so everyone knows exactly what was collected.
Does a vulnerability scan replace a penetration test?
No. A scan lists potential weaknesses; a penetration test proves which of them an attacker can chain into real access, within limits agreed in writing. Our reports keep scanner output, confirmed attack paths and open questions in separate columns so your team fixes the proven paths first.
Talk with an examiner
Put One Examiner Across All of Your Chicago Sources
Tell us which offices, people and systems are involved and what decision the findings must support. We check conflicts and confirm scope before engagement, and the request stays confidential.
GDF has served counsel and businesses since 1992 with 24/7 dispatch and examiners who have testified in federal and state courts.
Start here
Preserve the Chicago Evidence Before the Laptop Is Reimaged
On the first call a senior examiner hears what happened, tells you which devices and systems to hold at each site and explains how the examination would run and how long it would take. The consultation is free. We arrange a secure transfer for evidence and credentials.
24/7 hotline: (800) 868-8189
Reviewed by Joseph Caruso, Founder, CEO and CTO, CISSP. Last reviewed .