Cyber Investigations Expert Witnesses

Aliso Viejo, California

Cryptocurrency, Cybersecurity - Asset Searches, Fraud Investigations, Pig Butchering, High-Tech Fraud, Digital Forensics, Cyber Investigations, Cryptocurrency Valuation, Hacking, Cybercrime, Call Centers, Cell Phones, Divorce, Family Law, Industry Standards, EB-5

Over my 20-year career as an FBI Special Agent, I specialized in investigating complex cyber-enabled financial crimes, including cryptocurrency investment fraud, exchange compromises, SIM swapping, phishing, and account takeovers. My work extended into advanced cryptocurrency tracing, digital forensics, email and VOIP analysis, and international coordination with foreign law enforcement. I founded the FBI’s Orange County Cyber Task Force, bringing together federal, state, and local investigators to combat sophisticated cybercrime, and the investigative techniques I developed were disseminated across all 52 FBI Field Offices. From 2021 through my retirement in December 2023, I led U.S. government investigations into large-scale cryptocurrency fraud operations, including “pig butchering” schemes—now recognized as one of the most significant global crypto fraud threats. This work resulted in a nomination for the Attorney General’s Award from the Department of Justice’s National Crypto...

Los Angeles, California

Computers, Information Technology - Digital Forensics, Computer Forensics, Electronic Evidence, Electronic Discovery, eDiscovery, Email Analysis, Mobile, Computers, Cybersecurity, Cyber Breach Investigations, Cyber Investigations, Incident Response, DFIR

Dr. Joseph Greenfield is the Vice President and Chief Forensic Examiner at Maryman & Associates and an award-winning educator. He is a renowned computer forensics expert with over 15 years of investigative experience, including cyber breach investigations, employee misconduct, and email recovery and analysis. He has worked over 1000 cases and analyzed over 2000 pieces of digital evidence. His is known for deep forensic analysis while being able to explain technical details to non-technical decision-makers. He has provided expert witness testimony in state, federal, and international legal matters. Dr. Greenfield is also an Associate Professor of Information Technology Practice at the Viterbi School of Engineering at the University of Southern California, where he authored the undergraduate programs in both cybersecurity and digital forensics. In 2014, the Ponemon Institute ranked USC as 6th in the nation for “Best Schools for Cybersecurity” and the highest ranked on the West Coas...

Doylestown, Pennsylvania

Defamation, Information Technology - Financial Damages, Economic Damages, Internet Defamation, Digital Marketing, Business Valuation, Libel Slander, Reputation Management, Search Engine Optimization, Marketing, Public Relations, Cyber Investigations, Digital Forensics, Social Media, IP Damages, YouTube, Instagram, Facebook

Sameer leads a 250+ member team at Blue Ocean Global Technology and Capital Expert Services, specializing in litigation consulting and expert witness engagements. Given the unique nature of each case, Sameer offers a competitive advantage through an integrated team approach, including legal research, data analytics, private investigations, digital forensics, financial analysis, academic insight, and interviews. His team is strategic with client resources, ensuring that reports are developed collaboratively to achieve a blended rate. Co-experts are added strategically on merit. When engaged directly, all reports and testimony reflect Sameer's independent professional opinions Sameer has consulted on 400+ cases and regularly delivers CLE programs for State Bar Associations. He is a former investment and private banker, which affords him a framework for calculating damages on a wide range of case mandates. Over the past decade, Sameer's responsibilities at CFA Institute include publis...