Wynter Deagle is a partner in the Privacy and Cybersecurity Team in the firm's San Diego (Del Mar) office.

Areas of Practice

Wynter is a trusted advisor in the boardroom and a fierce advocate in the courtroom when businesses face issues found at the intersection of law, technology, and innovation.

Wynter is a first-chair litigator who regularly represents clients in privacy, cybersecurity, false advertising, and unfair business practices class actions (including breach-related litigation), as well as complex commercial litigation matters.  Clients depend on her ability to combine thoughtful legal analysis and strategy with an aggressive but practical “big picture” approach to litigation.

A Certified Information Privacy Professional (CIPP/US), Wynter’s experience includes representing a wide variety of companies, particularly those in the technology, life sciences, financial services, fintech, retail, food services, and consumer products sectors, from individual and class actions brought under the California Consumer Privacy Act (CCPA), Computer Fraud and Abuse Act, Children’s Online Privacy Protection Act (COPPA), Illinois Biometric Information Privacy Act (BIPA), Electronic Communications Privacy Act, Fair Debt Collection Practices Act, and various other privacy and cybersecurity-related state and federal laws and regulations. Wynter also defends clients from investigations and enforcement actions brought by federal regulators and state attorneys general arising out of data security breaches and/or data collection, use, and sharing practices.

Outside of the courtroom, Wynter draws on her significant litigation experience to empower clients to make compliance decisions that balance privacy and business functionality.  Wynter helps clients navigate the maze of confusing federal, state, and international privacy and data security laws and regulations. Utilizing her ability to bridge the gap between technology and the law, Wynter assists clients with rolling out data-driven products and services — including in the areas of the internet of things (IoT), machine learning, digital media, AI, and blockchain technology. Most recently, Wynter has devoted significant time to advising clients on the intricacies of the CCPA, BIPA and the Virginia Consumer Data Protection Act. 

Wynter is a passionate advocate for diversity, equity, and inclusion in the legal and business communities. She holds a Certified Diversity Professional (CDP) designation from the National Diversity Council and regularly provides advice related to inclusive recruiting and talent management strategies and diverse leadership development programs. She serves as President of the Board of Directors of Girls Inc. of San Diego County.  She also serves as pro-bono counsel to SunLaw — an organization dedicated to the promotion and advancement of women in-house attorneys — and Native Son — an organization dedicated to elevating the voices, visibility, and lived experiences of Black gay/queer men.



Representative Matters

  • Obtained dismissal of a putative nationwide class action against an e-commerce company arising out of a data security incident. Simultaneously resolved a state attorney general investigation into the company’s data management and security practices with no adverse action being taken against the company.
  • Defeated a class certification motion in a putative class action in California federal court alleging an event management company’s website disclosures and data collection practices violated the consumer legal remedies act, false advertising law, and unfair competition law.
  • Defended a registration and event management company in a putative class action in California state and federal courts alleging website disclosures and data collection practices violated the California Consumers Legal Remedies Act and Unfair Competition Law.
  • Guided a managed IT services company through responding to a data security incident that resulted in a successful malware infection and ransomware attack against nearly all of its customers. Currently defending the company from third-party claims for indemnification from its customers.
  • Assisted clients in a number of industries in developing email marketing campaigns, text message campaigns, pre-recorded call campaigns, and online information collection programs in compliance with CAN-SPAM and COPPA, among other laws.
  • Obtained terminating sanctions and nearly $4 million in monetary sanctions on behalf of CrossFit, Inc. in federal court trade libel, deceptive advertising, and unfair competition litigation against its direct competitor, the National Strength and Conditioning Association.
  • Represented Shari Redstone in highly contentious litigations in Delaware and Massachusetts concerning the corporate governance of Viacom, Inc., including the proper composition of the Viacom board. The settlement was hailed in the press as a complete victory for Shari Redstone and her father, Sumner Redstone. [The Los Angeles Times, “Viacom Power Struggle Ends With Shari Redstone Ushering in New
    Era for the Media Company”; The Los Angeles Times, “Viacom Struggle Ends: Shari Redstone at Helm: Daughter of Media Mogul ‘Pulled Off the Palace Coup’”; The Wall Street Journal, “Viacom and the Redstones Call it a Day”; The New York Times, “Fight for Viacom Is Said to End With the Redstones in Control.”]
  • Represented the board of directors of a broker-dealer in an internal investigation that resulted in discovery of multimillion-dollar fraud by senior executives. Secured seven-figure restitution award from perpetrators while ensuring that the client incurred no penalties or sanctions from regulatory authorities.
  • Defeated more than 30 motions to dismiss and multiple motions for summary judgment in representation of a Taiwanese creditor in complex civil RICO case against 34 foreign and domestic defendants.

* Includes some matters prior to joining Sheppard Mullin



  • “Leader in the Law,” San Diego Business Journal, November 2020
  • “California Trailblazer,” The Recorder, October 2020
  • “Top Female Executive Under 40,” Databird Business Journal, March 2020
  • "Business Woman of the Year - Rising Star," San Diego Daily Transcript, September 2019
  • "50 Influential Leaders in San Diego," San Diego Daily Transcript, September 2019
  • "40 Under 40 Hot List," San Diego Daily Transcript,  September 2019
  • "40 Next Top Business Leaders Under 40," San Diego Business Journal, August 2019
  • "Top 40 Under 40," San Diego Daily Transcript, May 2019
  • "Most Influential Women in San Diego County," San Diego Daily Transcript, March 2019


Speaking Engagements

  • Speaker, How Providers Can Prepare for a Ransomware Attack, HIT Cybersecurity, HIMSS TV, May 20, 2021.
  • Moderator, Recent Developments and Best Practices in Data Breach Incident Response, Association of Corporate Counsel – San Diego, April 22, 2021.
  • Panelist, “Capabilities of Counsel During a Security Incident,” Nisos APT Legal Series, March 3, 2021.
  • Panelist, “OMG! We’ve Been Hacked,” Athena, March 2, 2021.
  • Panelist, “Five Key Developments in the Privacy and Data Security Sector in 2020 and Five Predictions for 2021,” Webinar, January 26, 2021.
  • Presenter, “The Nuts and Bolts of CCPA 2.0,” Webinar, June 10, 2020.
  • Speaker, Protecting the Attorney-Client Privilege in a Digital World, Association of Corporate Counsel – San Diego, March 10, 2020.
  • Moderator, “Privacy and Information Security,” 2019 Private Funds Forum, September 26, 2019.
  • Speaker, “SOC 2 Audits and Cyber Litigation,” C-Suite Technology Dinner, February 27, 2019.
  • Keynote, “Identifying and Managing Cyber Risks,” CFO Roundtable, February 20, 2019.
  • Panelist, “Managing Cyber Risk,” Entrepreneurs’ Organization, February 19, 2019.
  • Panelist, “Cyber Risk: Do You Recognize Your Organization’s Vulnerability?,” Corporate Directors Forum, November 1, 2018.




  • Corporate Counsel Women of Color
  • San Diego Women’s Foundation
  • International Association of Privacy Professionals (CIPP/US)
  • National Association of Women Lawyers


J.D., Northeastern University School of Law, 2007

B.A., Roger Williams University, 2004


  • California
  • Massachusetts
  • New York
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