Breach Expert Witnesses

Los Angeles, California

Financial, Securities & Investments - Mortgage lending, Securities ratings, Cybersecurity, Securitization, Mortgage banking, Structured finance, Commercial RE leasing, Life and annuity insurance, Financial Risk Mgmt, Mortgage & asset-backed securities, Mortgage underwriting, Reinsurance, Financial guaranty, Damages, Mortgage origination, Litigation, Data Privacy, Breach

David Steel Managing Director, Risk Management & Litigation Support Advisory, The Oakleaf Group LLC David K. Steel serves as Managing Director of Risk Management and Litigation Support Advisory for Oakleaf. In his role, David is responsible for building the firm’s Financial Services Risk Management Practice and further expanding Oakleaf’s successful litigation support advisory business. David is an experienced leader in the financial services industry, with expertise in credit risk underwriting, enterprise risk management, portfolio management, capital markets, business strategy, restructurings, and arbitrations. Before joining Oakleaf, David successfully de-risked an $8.3 billion portfolio of reinsurance credits as a consultant for American Overseas Re. He also served as Chief Risk Officer of a life and annuity reinsurance venture for one of the largest US banks, creating an ERM framework, underwriting guidelines, and corporate governance policies and procedures. David was p...

Lewes, Delaware

Digital Forensics, Cybersecurity - Computer Forensics, Ransomware, Hacking, Metadata Analysis, Mobile Forensics, Cloud Forensics, Phishing, Everlaw, Incident Response, eDiscovery, Spoofing, Cellebrite, Business Email Compromise, Data Recovery, Data Preservation, EnCase, cyber, breach, Malware, Threat Actor Negotiations

Founder of DFDR Consulting LLC, now doing business as, CYBIR. Over the course of eighteen years, Nelson has consulted on, examined and testified to digital evidence related to personal, corporate, criminal, civil and domestic cases, along with data breaches. Acknowledged in “EnCE The Official EnCase Certified Examiner Study Guide” (Second and Third Editions) and “Mastering Windows Network Forensics and Investigation” (Second Edition), Nelson has also been published in eForensics Magazine for SQL investigation techniques. As a speaker, in addition to industry conferences and events, Nelson serves on the faculty of National Business Institute for CLEs and was a past Adjunct Professor of Digital Forensics. Industry credentials include: AccessData Certified Examiner (ACE), AccessData Mobile Examiner (AME), Certified Computer Examiner (CCE), Cellebrite Certified Mobile Examiner (CCME), Certified Data Recovery Professional (CDRP), Certified Ethical Hacker (CEH), Certified Forensic Compute...

Oxford, Mississippi

Business Damages, Business Valuation - Economic Damages, Business Interruption, Lost profits, Trade dress & trademark infringement, Economic impact on localities from specific events, Fin. Misrepresentations in Business sales, Software failure damages, Contractual disputes, Breach, Valuation, Product liability, Dispersal of class actions awards

• Shareholder at Alexander CPA LLC, an accounting firm specializing in litigation support, expert witness testimony, and business valuation. Thirty years of experience as an expert witness and business appraiser. • Former partner, member of the governing Board of Directors, and firm-wide director of Fraud, Forensic, and Litigation services for HORNE LLP, a super-regional CPA and consulting firm. HORNE joined BDO in 2025. • Qualified as an expert in financial matters, economic damages, business valuation, and accounting in federal and state courts in Mississippi, Arkansas, Tennessee, and Louisiana. Testimony has included jury and bench trials. Engagements include expert testimony for both plaintiffs and defendants. • Appraised hundreds of businesses for non-litigation purposes from a broad scope of industries, including shareholder buyouts, mergers & acquisitions, corporate planning, estate and gift, and others. • Representative engagements include accounting malpractice, economic da...

Hillsdale, New Jersey

Digital Forensics, Cybersecurity - eDiscovery, Remediation, Spoliation, Compromise, Chain of Custody, Standard of Care, Digital Assets, Crypto, IP Theft, Trade Secrets, Misappropriation, Metadata, Exfiltration, BEC, Business Email Compromise, Malware, Digital Forensics, Breach, FINRA, Governance

Antonio Rega has over 22 years of experience providing expert consulting, advisory, and subject matter expertise to global corporations and law firms in digital forensics, information security/privacy, emerging technology, cryptocurrency investigations and discovery. He leads complex investigations, leveraging his expertise in proactive and reactive discovery and analysis, and conducts in-depth examinations and remediation of electronically stored information (ESI) across various repositories, including cloud, local devices, web, and mobile. His advisory services span the entire investigation and litigation lifecycle, including proactive compliance and regulatory assessments, responses to government subpoenas & orders issued by regulatory agencies. When called upon to do so, Antonio has provided expert testimony and reporting within his areas of expertise. He specializes in helping clients navigate the complexities of investigations and litigation. Antonio has presented written and...