Defamation Expert Witnesses
Defamation expert witnesses and consultants listed here may be able to form expert opinions, draft expert witness reports, provide expert witness testimony at deposition and/or trial as or serve as consulting (non-testifying) experts on defamation. The defamation expert witness listings on this page are typically from fields/areas of expertise such as: Artificial Intelligence, Behavioral and Social Sciences, Communications, Defamation, Digital Forensics , Employment, Forensic Psychology, HMO, Hospital Administration, Human Resources, Internet, Investigation, Marketing, Psychology, and Vocational Rehabilitation.
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Sameer Singh Somal, CFA, CFP, CAIA
Defamation, Business Damages & Valuation Expert
Blue Ocean Global Technology
Defamation, Information Technology
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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...
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Robert J. Fisher
Defamation and Reputation Harm Expert Witness
Fisher & Associates, Inc.
Westlake Village, California
Defamation, Communications
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Journalism, Libel, Public Perception/Opinion, False Light/Privacy, Advertising, Slander, Negative Media Exposure, Defamation of Character, Marketing, Negative Online Reviews, Reputation Damage Costs, Public Opinion/Perception, Defamation, Online/Internet Defamation, Reputation Damage Repair/Costs, Journalism
PROFESSIONAL BACKGROUND
Professional Employment
* Journalist: New York Times Reporter
* Public Relations: Eight years working for 3 of top 10 PR firms in U.S.
* PR/Communications Firm: Owned PR firm in Los Angeles 42 years (also provided Advertising and Marketing services)
Professional Areas of Specialization
* First PR firm in nation representing legal profession (1978). Represented 130 law firms. Provided PR, marketing and litigation services.
* Handled communications ("Court of Public Opinion") and provided support in 250-300 litigation cases/trials nationwide.
* Acknowledged nationally for expertise in crisis communications and reputation damage repair (created and implemented 50-60 reputation damage repair programs.)
* National reputation with news media for reputation management and repair, utilized as expert media information source, analyst and commentator by print and
electronic media (both news and feature), wire services. (Example: during and between the...
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Alexandra Clarfield, PhD
Clinical/Forensic Psychologist -- all ages
Alexandra Clarfield, PhD Psychology Inc.
Auburn, California
Psychology, Forensic Psychology
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Autism Spectrum Disorder, Child Abuse, Cyber bullying, Defamation, Law Enforcement, First Responders, PTSD, Military Mental Health, Psychological Malpractice, Wrongful Termination, Disability Impairment, Immigration Evaluation, Workers Compensation, Workplace harassment, Workplace violence, Chronic Pain, Native American Trauma
Dr. Alexandra Clarfield is a licensed psychologist and Qualified Medical Examiner (QME) providing forensic psychological evaluations throughout Northern California, with offices in Auburn (Placer County), Yolo and Sonoma Counties. She accepts referrals from both plaintiff and defense. Her forensic practice includes Workers’ Compensation QMEs, civil litigation support, and specialized evaluations for Autism Spectrum Disorder (ASD) and Intellectual Disability.
Dr. Clarfield has extensive professional experience. In addition to an M.S. in Social Psychology from Vanderbilt University and Ph.D. in Clinical Psychology from Temple University, she completed training in cutting edge treatments for traumatic stress disorders including Eye Movement Desensitization and Reprocessing (EMDR) and Prolonged Exposure Therapy. She completed in depth training in mindfulness-based approaches such as Dialectical Behavior Therapy, Sensorimotor Psychotherapy and Hakomi. Her experience in the treatment of ...
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Diana Ascher, PhD, MBA
Truth matters. Methodology wins.
Information Science Consulting
Los Angeles, California
Internet, Digital Forensics
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AI Audit, Synthetic Control, Research, Defamation, Focus Groups, Litigation Consulting, Content Analysis, Survey Analysis, Network Analysis, Media Analysis, Damages, AI Bias, Artificial Intelligence, Algorithms, Social Media, Digital Evidence, Information Flow, Algorithmic Decision Making, Amplification Analysis, Reputation Harm
Diana Ascher, PhD, MBA, is an expert witness in defamation and artificial intelligence (AI) bias litigation involving digital evidence and algorithmic systems. She is retained in the largest cases—including matters seeking more than $1 billion in damages—where amplification, causation, and harm are determinative.
Dr. Ascher typically is engaged at the outset of a case to assess whether technical theories will withstand evidentiary scrutiny. She works with plaintiffs and defendants.
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Joann E. Killeen, B.A., M.S., APR, Fellow PRSA
Public Relations, Crisis Management, Defamation
KFG PR Joann Killeen Expert Witness
LOS ANGELES, California
Communications, Marketing
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Public Relations, Crisis Management, Reputation Management/Harm, Social Media, Defamation, Slander, Libel, Franchises Franchisors Franchisees, SEO/Websites, Mainstream Media, Brand Reputation, Online internet harm, Marketing, PR Professional Practices/Malpractice, Advertising, Strategic Branding
Joann Killeen, APR, Fellow PRSA, has over 35 years of experience and is one of the few court-qualified, public relations expert witnesses.
She is Accredited in Public Relations (APR) and a Fellow PRSA, awarded by the Public Relations Society of America, one of the leading public relations professional organizations. She is one of 400 members in the PRSA College of Fellows.
With a proven track record of success in corporate, agency, technology, government, franchisee, education and health care, Killeen is an accomplished public relations professional whose client campaigns have won awards by PRSA. Her extensive experience enables her to quickly assess client's communications needs and recommend tailored, cost-effective strategic solutions.
Killeen served as the President and CEO of the Public Relations Society of America in 2002, where she led the organization to record financial success, a first in its 76-year history.
She has has engaged by law firms to provide pre-trial consu...
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Deanna Foster, Ph.D.
Emotional Distress Expert with Clinical Practice
Psychological Resources & Services, Inc.
Denver, Colorado
Psychology, Forensic Psychology
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Employment, disability, Psychological Evaluation, Sexual Harassment, Discrimination, Retaliation, Wrongful Termination, Post Traumatic Stress, PTSD, Depression, Defamation, Emotional Distress, Anxiety, Assault, Trauma, IME, Malingering, Title VII, Whistleblower, Sexual Assault
Psychological expert in emotional distress due to chronic stress or catastrophic events arising out of psychological trauma, employment issues, or physical injuries. Performed over 600 IME's with psychological testing including symptom validity and exaggeration measures. Expertise in stress disorders, workplace dynamics, employment litigation, depression, anxiety, trauma, personality dysfunction and malingering.
Retained in ~80 civil litigation cases. Awarded dual state licensure in California and Colorado with the ability to perform examinations in over 40 states via telehealth or in person.
Graduated APA accredited doctoral program at USC with honors. Post-doctoral APA accredited fellowship in clinical evaluation and treatment at Kaiser-Permanente. Awarded professional membership in the Society of Industrial and Organizational Psychologists. Certified as a Qualified Medical Evaluator for 19 years to perform psychological med-legal evaluations/ IME's. Advanced trauma training w...
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David M. Soja, M.Ed., CAGS, M.S.
Vocational Damages - Wage Earning Capacity Expert
CRC Services, LLC
Windsor, Connecticut
Vocational Rehabilitation, Employment
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ADA Job Analysis, Career Counseling, Diminution, Defamation, Disability Reviews (SSA/ERISA), Divorce, Employability, Rebuttal Xp, Job Placement, Labor Market Survey, P-Injury, Transition Assessments, Vocational Life Care Plans, Memory Testing, Wage Earning Capacity, W-Comp, Wrongful Termination, Veteran TDIU CampLejeune, Diligence, Tort
David M. Soja, an early pioneer in the private vocational rehabilitation expert witness space; opened his practice, CRC Services, LLC in 1981. Mr. Soja and his highly esteemed professional colleague Erin S. Bailey, CRC, ABVE for 17 years; recruit, train and mentor vocational rehabilitation graduate level students on the intricacies of vocational assessment interviewing, vocational testing, transferrable skills analysis, vocational guidance and counseling and the art of labor market surveys and job placement of impaired individuals.
Team-CRC has grown to 12 highly skilled vocational rehabilitation experts. We specialize in a wide array of vocational consulting, vocational rehabilitation and vocational expert advising services to governmental agencies, private business, insurance companies, the legal community and the general public, nationwide.
Mr. Soja and all his professional staff are nationally certified as rehabilitation counselors. Mr. Soja and Ms. Bailey are state licensed,...
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Wanderson M Castilho
Digital Forensics: 6,000+ Cases Solved
Enetsec Digital Forensics
Boca Raton, Florida
Digital Forensics, Investigation
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Digital forensics , Mobile Forensics, Cellebrite expert, Deepfake Analysis, Digital investigation , Corporate Espionage, Digital expert, Domestic Violence Evidence, Defamation , Extortion & Ransomware, Digital fraud, Data Exfiltration, Scams, Expert Witness Testimony, Slander expert , Stalking expert, Social media investigator
Wanderson Castilho | Digital Forensics & Cybercrime Expert
Professional Profile
With over 25 years of experience and a track record of successfully resolving more than 6,000 cases, I provide high-stakes digital forensic analysis and expert testimony for complex litigation. My expertise lies at the intersection of advanced computational science and behavioral logic, specializing in uncovering digital "smoking guns" that traditional investigations often overlook. I bridge the gap between complex binary data and clear, admissible courtroom narratives.
Core Competencies & Case Experience
• Complex Data Recovery: Advanced extraction of deleted, encrypted, or fragmented data from mobile devices, cloud environments, and damaged hardware.
• Cybercrime & Incident Response: Expert investigation into ransomware, data breaches, and sophisticated network intrusions.
Behavioral Digital Analysis: A unique methodology combining motion data (accelerometer/gyroscope) with digital footprints...
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Sean E Richey, PhD
AI, Social Media, Online Reputational Harm Expert
Georgia State University
Atlanta, Georgia
Artificial Intelligence, Behavioral and Social Sciences
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AI, Defamation, Online Harassment, Statistical Analysis, Sampling Bias, Polling Methodology, Survey Design, Survey Validity, Polling Methodology, Social Media, Political Advertising, Cyberbullying, Conspiracy Theories, Political Communication, Election Disputes, First Amendment, Vaccine Hesitancy, LLM, Measurement Error, Data Analysis
Sean Richey, Ph.D., is a Full Professor of Political Science at Georgia State University specializing in digital communication, online information environments, public opinion formation, and survey methodology. His research examines how narratives spread online, how individuals form beliefs, and how communication environments influence perception, reputational harm, and behavior.
Dr. Richey has authored seven books and more than thirty peer-reviewed publications on political communication, online discourse, persuasion, conspiracy beliefs, civic behavior, and internet-mediated information environments. His recent work includes research on artificial intelligence systems, social media amplification, misinformation, and digital persuasion dynamics.
He provides litigation consulting and expert analysis in matters involving:
online defamation and reputational harm,
AI-generated misinformation,
social media amplification,
digital narrative spread,
survey methodology disputes,
polling i...
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David M. Soja, M.Ed., CAGS, M.S.
Vocational Damages - Wage Earning Capacity Expert
CRC Services, LLC
Massachusetts
Vocational Rehabilitation, Employment
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ADA Job Analysis, Career Counseling, Diminution, Defamation, Disability Reviews (SSA/ERISA), Divorce, Employability, Rebuttal Xp, Job Placement, Labor Market Survey, P-Injury, Transition Assessments, Vocational Life Care Plans, Memory Testing, Wage Earning Capacity, W-Comp, Wrongful Termination, Veteran TDIU CampLejeune, Diligence, Tort
David M. Soja, an early pioneer in the private vocational rehabilitation expert witness space; opened his practice, CRC Services, LLC in 1981. Mr. Soja and his highly esteemed professional colleague Erin S. Bailey, CRC, ABVE for 17 years; recruit, train and mentor vocational rehabilitation graduate level students on the intricacies of vocational assessment interviewing, vocational testing, transferrable skills analysis, vocational guidance and counseling and the art of labor market surveys and job placement of impaired individuals.
Team-CRC has grown to 12 highly skilled vocational rehabilitation experts. We specialize in a wide array of vocational consulting, vocational rehabilitation and vocational expert advising services to governmental agencies, private business, insurance companies, the legal community and the general public, nationwide.
Mr. Soja and all his professional staff are nationally certified as rehabilitation counselors. Mr. Soja and Ms. Bailey are state licensed,...
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Jeffrey R. Ketchum, CRA
Executive Recruiting & Compensation Expert
Lordstone Corporation
Gladstone, Michigan
Employment, Human Resources
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executive recruiter, executive compensation, recruiter, recruitment, recruiting, executive search consulting, headhunter, compensation, earning capacity, wage loss, employability, employment, job search analysis, executive assessment, vocational, placement, earnings, Human Resources, Defamation, lost income
Jeffrey Ketchum is an executive recruiting and compensation expert witness with 30 years of executive level (C-level, VP, Director, Manager & Staff) experience with small businesses, middle market and Fortune 500 companies. Mr. Ketchum has personally completed over 220 engagements focused on executive recruiting, executive compensation, executive marketability, management appraisal and candidate assessment. He is the President of several strategic HR, executive search & compensation consulting firms, including Lordstone Corporation and Dieck Executive Search, Inc.
Mr. Ketchum is a graduate of Cornell University's Advanced Program for Executive Search & Leadership Consulting and Wharton's Executive Compensation: Strategies & Frameworks program. He is an AESC Certified Researcher/Associate (CRA) through the Association of Executive Search and Leadership Consultants, the official representative of the industry to the US Government and European Commission. Mr. Ketchum has global ex...
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Candace Kelley, J.D., M.S.
Defamation Expert| Journalist|Professor
The Candace Kelley Group, LLC
Bound Brook, New Jersey
Defamation
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defamation, media law, Slander, invasion of privacy, television, journalism, litigation support, press, online privacy, newspaper, voting, First Amendment, actual malice, defense, media, Libel, social media, reputation
Candace Kelley is a leading expert in reputational harm, specializing in high-profile defamation cases at the intersection of journalism, music, media, and culture. Through her work she provides critical insights that help with navigating the complexities of defamation, the First Amendment and related constitutional challenges. She works closely with legal teams to assess the strength of a case, develop litigation strategies, and provide detailed legal expert reports. Expertise in balancing free speech rights with reputational protection, particularly in cases involving public figures.
Practicing Journalist: Candace is a journalist firmly planted in modern newsday practices who knows about workflows, social media integration, and real-time reporting,
Areas of Expertise: Entertainment Industry & Celebrity Defamation, Public Figures & Actual Malice Standard, Defamation in Journalism & News Media, Social Media & Digital Defamation, AI-Generated Misinformation & Deepfakes, First Ame...
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David M. Soja, M.Ed., CAGS, M.S.
Vocational Damages - Wage Earning Capacity Expert
CRC Services, LLC
New York
Vocational Rehabilitation, Employment
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ADA Job Analysis, Career Counseling, Diminution, Defamation, Disability Reviews (SSA/ERISA), Divorce, Employability, Rebuttal Xp, Job Placement, Labor Market Survey, P-Injury, Transition Assessments, Vocational Life Care Plans, Memory Testing, Wage Earning Capacity, W-Comp, Wrongful Termination, Veteran TDIU CampLejeune, Diligence, Tort
David M. Soja, an early pioneer in the private vocational rehabilitation expert witness space; opened his practice, CRC Services, LLC in 1981. Mr. Soja and his highly esteemed professional colleague Erin S. Bailey, CRC, ABVE for 17 years; recruit, train and mentor vocational rehabilitation graduate level students on the intricacies of vocational assessment interviewing, vocational testing, transferrable skills analysis, vocational guidance and counseling and the art of labor market surveys and job placement of impaired individuals.
Team-CRC has grown to 12 highly skilled vocational rehabilitation experts. We specialize in a wide array of vocational consulting, vocational rehabilitation and vocational expert advising services to governmental agencies, private business, insurance companies, the legal community and the general public, nationwide.
Mr. Soja and all his professional staff are nationally certified as rehabilitation counselors. Mr. Soja and Ms. Bailey are state licensed,...
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Frank L Brown, Jr, MD, FCP, FACP
Administrative Medicine & Healthcare Quality
AMERICLIN MEDICAL EXPERTS (AMEDX)
Bluffton, South Carolina
Hospital Administration, HMO
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Managed Care & HMO, Negligent Physician Credentialing & PEER Review, Hospital Administration, Governance, Negligent Utilization Review, Healthcare Fraud & Abuse, Value Based Care (ACO), Defamation, Negligent Prior Authorization, Organizational Performance Evaluation, Quality Oversight, Medication Errors, HIPPA
Frank L Brown, Jr, MD, MBA, FCP, FACP is an administrative consulting and testifying expert witness who provides services involving healthcare systems. His background includes multidisciplinary training in pharmacy, medicine, and business from Howard University, Yale University, and Virginia Commonwealth University.
Dr. Brown is retained by attorneys for his clear, objective, well-supported opinions; strong analytical skills; and the ability to communicate complex healthcare and administrative issues in a manner that is understandable, credible, and persuasive to judges, juries, arbitration panels, and administrative bodies.
His work combines practical medical expertise with deep experience in healthcare quality, patient safety, accreditation, utilization management, pre-authorization, medical necessity, and organizational performance evaluation.
He has served as an Examiner for both the Malcolm Baldrige National Quality Award and the National Committee for Quality Assurance, ev...
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Shannon M. Wilkinson
Defamation & Reputation Damage Expert Witness
Reputation Communications
Hilton Head, South Carolina
Defamation
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Reputation Management, Online Reputation Management, Defamation
Shannon Wilkinson is a nationally recognized authority in online reputation management and an expert witness in defamation litigation.
As the founder of Reputation Communications, established in 2009, Ms. Wilkinson has been at the forefront of the online reputation management industry, pioneering specialized services for high-profile individuals and organizations whose public standing is critical to their success.
With over fifteen years of experience, Ms. Wilkinson's expertise has been used by Fortune 500 executives, Forbes 400 philanthropists, Silicon Valley founders, financial institutions and major organizations. Her firm is distinguished as one of the few online reputation management companies focusing on the unique needs of influencers - individuals with significant impact in business, politics or social issues.
Ms. Wilkinson's thought-leadership is widely recognized. She has been interviewed by major media outlets including The Wall Street Journal, The Guardian, CNBC and...
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Chris Silver Smith
SEO Expert Witness | $98+ Million in Damage Awards
Argent Media
Dallas, Texas
Internet, Marketing
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Search Engine Optimization, SEO, Defamation, Technology, Online Advertising, Social Media, Reputation Management, Domain Names, Cybersquatting, Internet Analytics, APIs, API Development, Internet Advertising, Google Ads, Google Analytics, Facebook, Twitter, YouTube, Instagram, Trademark Infringement
With more than $98 million awarded to litigation clients, Chris Silver Smith has provided expert witness services on cases involving major search engines, search engine optimization (SEO), social media, internet analytics, search engine algorithms, application programming interfaces (APIs), image meta data, patents, domain names, cybersquatting / typosquatting, online defamation, reputation management, blogging, mapping, and more.
Litigation clients have included Versace, Adidas, Starbucks, Carnival Cruises, and PODS Enterprises.
As an SEO Expert Witness, he has provided analysis and testified in cases involving trademark infringement conducted through various search engine optimization techniques. Smith has also been Google Ads Search Certified and has testified as a Pay-Per-Click Ads expert witness in cases involving the use of trademarks, copyrighted content, and keyword targeting involving PPC ads.
Smith is also skilled in social media analysis and has used sentiment analys...
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Tony Wright
SEO and Digital Marketing Expert - 25 yrs exp.
WrightIMC
Allen, Texas
Internet, Marketing
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SEO, Search Engine Optimization, Google Adwords, Digital Advertising, Trademark, Website Development, crisis communication, public relations, advertising, advertising agency, AI, Advertising, Google, Bing, Wordpress, Defamation, brand reputation
Tony Wright offers over 26 years of expertise in interactive marketing and online reputation management. He is a valuable asset as an expert witness in legal cases involving digital marketing practices, online defamation, and brand reputation issues. He has also served as an expert witness in cases involving trademark disputes. Wright is an expert in search engine optimization with a background in traditional and digital public relations and journalism. Wright has successfully guided companies of all sizes through complex online challenges, helping them achieve profitability and manage crises effectively.
Wright’s notable experience includes leading the online reputation management strategy for American Airlines after September 11, 2001. His extensive knowledge of corporate blogging, crisis communication, and digital brand strategy positions him as an authority. As the founder and driving force behind WrightIMC, he has overseen numerous interactive marketing, public relations, and...