Ed Chang is a partner in our Los Angeles office.

Ed represents institutional clients in all aspects of complex litigation, with an emphasis on high-stakes consumer and commercial litigation. His focus includes unfair competition, deceptive practices, cybersecurity and privacy class actions. Ed also advises major corporations on complex cybersecurity incidents, including data breaches and ransomware attacks, and is frequently acknowledged as a leading cyber law practitioner in the United States.

Ed has acted as lead counsel in numerous class and mass actions, arbitrations, government investigations, and other high-profile litigation matters. He also regularly provides strategic counsel on sensitive cybersecurity and privacy issues, advising executive leadership and boards of directors on mergers and acquisitions, public relations, and crisis management.

Ed has been named a Top 500 Leading Global Cyber Lawyer by Lawdragon magazine in 2024, 2025, and 2026, as well as a Top Cyber Lawyer by the Daily Journal and a National Cybersecurity & Privacy Rising Star by Law360 and LexisNexis.

Recent Representative Matters

• Currently representing clients in a broad array of individual and nationwide consumer class/mass actions, arbitrations, and ongoing government investigations.
• Currently representing a specialty retailer in a highly publicized unfair competition dispute brought by a leading competitor.
• Secured complete dismissals of over 500 mass arbitration claims brought against a prominent specialty retailer.
• Achieved full dismissals in multiple MDL privacy class and representative actions involving major vehicle original equipment manufacturers.
• Defended a national fast-food chain in a data breach class action and reached a favorable individual settlement after three years of protracted litigation.
• Represented an online retailer in a nationwide technology class action and successfully precluded all class claims.
• Acted for a leading homebuilder in several nationwide product defect class actions and defeated class certification.
• Defended a medical device manufacturer in multiple class actions and successfully foreclosed the class claims.
• Represented an information services provider in class litigation alleging deceptive marketing and obtained complete dismissals.
• Secured a favorable appellate published opinion for a telecommunications company in a bellwether class action.

Speaking Engagements

• “Recent Privacy & Cybersecurity Trends in Litigation and Regulatory Investigations,” July 16, 2025.
• “Joint Defense/Common Interest: Navigating Attorney-Client and Work-Product Privileges,” February 13, 2025.
• “Dispute Resolution Strategies: A Comparison of Arbitration Versus Litigation,” September 30, 2024.
• “Cybersecurity Update: Privilege in Data Breach Investigations and Beyond,” August 13, 2024.
• “CISO Liability: Personal and Professional Responsibility,” October 28, 2022.
• “Cybersecurity and the Lawyer’s Role During a Cybersecurity Incident,” Fall 2022 Product Liability Advisory Counsel (PLAC) Annual Conference, October 20, 2022.
• “Cybersecurity and Privacy Hot Topics: Global Legal Update for In-House Lawyers,” October 25, 2021.
• “Cybersecurity & Privacy Recent Trends and Updates,” American Automobile Association Nationwide Litigation Summit, October 5, 2021.
• “Cybersecurity & Privacy Update: Roundtable Discussion of Key Litigation, Mass Arbitration and Other Developments in 2021,” September 29, 2021.
• “Diversity: Panel Discussion on National Current Events and Inclusion & Advancement,” August 25, 2021.