David Kalat is a testifying expert in information science and electronic evidence. He leads the Chicago digital forensics lab for BRG’s Global Investigations + Strategic Intelligence practice. He has over 20 years of experience in digital video, which he applies to the forensic examination of video evidence in a variety of contexts including investigations into alleged police misconduct.

Mr. Kalat is a Certified Fraud Examiner (CFE), a Certified Computer Examiner (CCE), a Certified Information Systems Security Professional (CISSP), an Access Data Certified Examiner (ACE), an Illinois-licensed private detective, and a nonfiction author. He holds a master’s degree in library and information science from the University of Illinois at Urbana-Champaign. He earned his bachelor’s degree from the University of Michigan.


University of Illinois
MLIS, Library and Information Science, 2011

University of Michigan
B.A., Film and Video Studies, 1992

Employment History

Duff & Phelps
Director, Disputes and Investigations
2011 - 2015

News & Insights

Selected Publications

News & Commentary


Professional Affiliations

Association of Certified Fraud Examiners
Chicago Chapter Member

Forensic Expert Witness Association

Chicago Area Litigation Support Managers

Illinois Private Detective License
#115 002487

International Society of Forensic Computer Examiners