Anna Hsia

Anna Hsia

Partner – ZwillGen Law LLP

Office: San Francisco, CA

Phone: (415) 590-2341

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Anna Hsia maintains a diverse practice counseling clients on product development and privacy issues, and litigating complex business disputes. Her broad clientele includes companies in the gig economy, online gaming, cloud computing, advertising, and biotechnology space.

Anna assists clients with navigating the complex web of privacy laws and regulations that apply to existing and new technologies. From counseling clients on consumer-facing privacy policies and terms of service to working with business teams to mitigate risk associated with new product offerings, Anna provides practical advice to resolve difficult legal issues. Anna also works with business-to-business clients on transactional issues arising from licensing and reseller arrangements. She has guided clients on compliance with regulations such as the TCPA, HIPAA, COPPA, state-specific privacy regulations including the CCPA and CalOPPA, and the Fair Credit Reporting Act. Anna has also counseled clients on compliance with the GDPR and cross-border data transfers.

As part of her litigation practice, Anna guides clients through complex disputes. She has broad experience litigating claims involving unfair competition allegations, false advertising, and other privacy-related claims in federal and state court. Anna has extensive experience representing both plaintiffs and defendants in consumer class actions, including defense of class actions involving the TCPA. She has also assisted clients with federal and state regulatory investigations, and with guiding clients through data breach responses.

Anna serves on the Executive Committee of the Cybersecurity and Privacy Law section of the Bar Association of San Francisco. She has been published by the American Bar Association, the Daily Journal, and Financier Worldwide. Her speaking engagements include presentations at the Stanford Ecommerce Best Practices Conference, PLI’s TechLaw Institute, and the Minority Corporate Counsel Association’s CLE Expo.

Prior to joining ZwillGen, Anna litigated a variety of business disputes for both plaintiffs and defendants. She developed experience in contract disputes, consumer financial services litigation, securities litigation, trademark, and trade secret actions. While a member of Goodwin Procter’s privacy and data security group, Anna counseled clients on compliance with federal, state, and international privacy laws.

Anna received her law degree from Harvard Law School, where she served as an Editor-in-Chief and Outreach Editor of the Harvard Negotiation Law Review.

Anna’s services are offered to clients through ZwillGen Law LLP, an affiliate of ZwillGen PLLC.



Harvard Law School, J.D., 2004

University of California Los Angeles, B.A., 2001, summa cum laude, Phi Beta Kappa


Goodwin Procter LLP

Tycko & Zavareei

Quinn Emanuel Urquhart & Sullivan



District of Columbia

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