LAWYER PROFILE
Viola Trebicka

Viola Trebicka

USA 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 1 practice area

About

Provided by Quinn Emanuel Urquhart & Sullivan, LLP

Practice Areas

Viola Trebicka is the litigator clients call when the stakes are high, and failure is not an option. She is creative, persistent, and relentlessly focused on getting the best possible outcome, no matter how complex or uphill the fight. A partner in the firm’s Los Angeles and New York offices, Viola has a national litigation and trial practice, with a particular focus on high-stakes commercial and technology matters. She has successfully defended Fortune 100 companies in some of their most sensitive and high-profile disputes and is especially experienced in cases involving data privacy, consumer protection, and class action litigation.

Viola also serves as co-chair of the firm's Data Privacy and Security Practice. Her extensive experience spans defeating privacy claims, opposing class certification, managing mass arbitrations, handling data breach remediation and litigation/settlement, and resolving complex data and intellectual property cases through discovery and trial.

She has delivered major wins for clients, including, most recently, a complete class certification denial in Calhoun v. Google. Other noteworthy successes include securing summary judgment in a significant Chrome user data privacy case against Google, defeating a Rule 23(b)(3) class certification in a high-stakes private browsing user data privacy case against Google, achieving a motion to dismiss victory on behalf of Kaseya in a data breach liability action, and attaining a complete defense verdict in a patent trial for Novatel and Verizon.

In recognition of her experience and victories, Viola was recognized in the Lawdragon 500 Leading Global Cyber Lawyers and ranked by Legal 500 USA in the Data Privacy and Data Protection field (Media, Technology, and Telecoms) in 2023, 2024, and 2025, and won the 2024 California Legal Awards in the category “Women Leaders in Tech Law.”

Chambers Review

Provided by Chambers

Chambers Guide to the USA

Privacy & Data Security: Litigation - USA - Nationwide

Band 3
Band 3

Individual Editorial

Viola Trebicka is cochair of the firm's data privacy and security practice. She has a notable practice, representing major technology clients in large nationwide and multi-district class actions and litigations arising out of data breach, ransomware and cyber security incidents.

Strengths

Provided by Chambers

  • Viola is very strategic, creative and listens really well.

    Privacy & Data Security: LitigationChambers Guide to the USA

Ranked Individuals at Quinn Emanuel Urquhart & Sullivan, LLP (75)

California

Delaware

District of Columbia

  • Profile image of William Burck
    William Burck

    Litigation: White-Collar Crime & Government Investigations

    View profile
  • Profile image of Juan Morillo
    Juan Morillo

    Litigation: White-Collar Crime & Government Investigations

    View profile
  • Profile image of Robert A Zink
    Robert A Zink

    Litigation: White-Collar Crime & Government Investigations

    View profile

Florida

Georgia

Illinois

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership