Forensic Expert Witness Profile


David Kalat

CFE, CCE, CISSP, ACE, Private Detective

Berkeley Research Group, LLC
70 W. Madison, Suite 5000
Chicago, IL 60602

Phone: 312-429-7907


  • Testifying expert in digital forensics
  • Master's Degree Library & Information Science, UIUC
  • Forensic Data Preservation
  • Electronic Discovery
  • Data Analytics
  • Investigative Due Diligence
  • Private Detective, Illinois and Texas



Mr. Kalat is testifying expert in digital forensic investigations and an eDiscovery specialist. He is an International Society of Forensic Computer Examiners Certified Computer Examiner (CCE), a Certified Information Systems Security Professional (CISSP), an Access Data Certified Examiner (ACE), a Certified Fraud Examiner (CFE), a Licensed Private Detective in Illinois and Texas, and a non-fiction author specializing in the history of information technology systems. He leads the Chicago digital forensics lab for BRG’s Global Investigations and Strategic Intelligence practice group. Prior to joining BRG, Mr. Kalat was with Duff & Phelps’ Disputes and Investigations practice, where he managed an international team of forensic examiners and eDiscovery support specialists. Mr. Kalat has over 20 years of experience in digital video, and has applied this knowledge to the forensic examination of video evidence in a variety of contexts including investigations into alleged police misconduct.

Curriculum vitae

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