Attorney Detail Banner
Back to Attorneys
Trebicka, Viola
Direct Tel: +1 213-443-3243, Direct Fax: +1 213-443-3100
Los Angeles
Tel: +1 213 443 3000 Fax: +1 213 443 3100
New York
Tel: +1 212 849 7000 Fax: +1 212 849 7100

Viola Trebicka is a partner in the firm's Los Angeles and New York offices and the co-chair of the firm's Data Privacy and Security Practice. Ms. Trebicka maintains a diverse complex commercial litigation and trial practice, with particular emphasis on data privacy and security matters, antitrust litigation, intellectual property disputes, and class actions. She represents both plaintiffs and defendants in a variety of state and federal jurisdictions across the country. In 2023, Ms. Trebicka was ranked by Legal 500 USA in the Data Privacy and Data Protection field (Media, Technology, and Telecoms).

  • AIG
  • Barnes & Noble
  • CaptureRX
  • C.J. Segerstrom and Sons
  • Conagra
  • Digital River
  • Hyundai Motor America
  • Kia Motors America
  • Mattel, Inc.
  • MassMutual
  • Novatel Wireless
  • Pacific Gas and Electric Company
  • Verizon
  • University of Southern California
  • Zynga


  • Currently defending Kaseya US LLC, an information technology managements and security software provider for managed service providers and small to medium sized business, in a lawsuit in Florida federal arising from a ransomware attack against Kaseya perpetrated by the cyber terrorist gang REvil in July 2021.
  • Currently defending Google in a high-profile privacy class action regarding various Google offerings including Chrome, Google Analytics, and Google Ad Manager.  The complaint asserts federal and state wiretapping claims, as well as state constitutional and common law privacy claims, on the allegation that Google receives users’ communications with websites and personal information when users are browsing the web in “private” or “incognito” mode.
  • Currently defending Google in a high-profile privacy class action alleging that Google improperly obtains browsing data when users have not opted to sync the Google Chrome browser with their Google account. The complaint asserts various federal and state claims, including wiretapping claims, state constitutional and common law privacy claims. 
  • Currently representing major companies who were users of U.S. rail freight services asserting antitrust claims against BNSF, CSX, Norfolk Southern and Union Pacific. The central allegation is that defendants colluded to use fuel surcharges as a means to impose inflated rail freight rates from July 2003 through December 2008. The cases are pending in various federal courts around the country.
  • Currently representing a putative class of individuals who claim they paid ATM access fees at anticompetitively high levels as a result of an unlawful agreement among the dominant ATM networks and the nation’s largest retail banks.
  • Obtained a complete defense jury verdict of no-infringement on four asserted patents for defendants Verizon Wireless and Novatel Wireless in a patent infringement matter relating to mobile hand-off and relay technology.
  • On behalf of Songkick, sued Ticketmaster and Live Nation for antitrust violations in the artist presale ticketing services market.  After completing fact and expert discovery, defeated the defendants’ summary judgment motion in its entirety (which no antitrust plaintiff had previously been able to accomplish against Ticketmaster) and subsequently resolved the case two weeks before trial with a $110 million settlement payment and acquisition of Songkick’s assets for a confidential amount.
  • Successfully defended Barnes & Noble in class action alleging various violations of the Labor Code, including failure to provide meal breaks and rest breaks and failure to pay overtime. The Court denied certification in its entirety.
  • For Mattel, obtained order from Ninth Circuit vacating verdicts of liability for alleged trade-secret misappropriation and damages award of more than $170 million; separately defeated antitrust claims purportedly worth $3 billion and RICO claims with similar alleged stakes; and obtained summary judgment on trade-secrets claims allegedly worth $1 billion.
  • Yale Law School
    (J.D., 2007)
    • Yale Journal for International Law:
      • Submissions Editor
  • University of Richmond
    (B.A., summa cum laude, Interdisciplinary Studies, 2004)
    • Mace Award 2004 to the most outstanding graduating student
    • C. Evans Award for Outstanding Achievement in Scholarship
    • Phi Beta Kappa
  • The State Bar of New York
  • The State Bar of California
  • United States Court of Appeals:
    • Ninth Circuit
  • United States District Court:
    • Central District of California
  • Albanian
  • German
  • Debevoise & Plimpton, LLP:
    • Associate, 2007-2010
  • UN Commission on International Trade Law, Vienna, Austria:
    • Visiting Scholar on International Commercial Arbitration issues, worked on revision of UNCITRAL Arbitration Rules, 2007
  • Legal 500 USA, Media, Technology, and Telecoms: Cyber Law (including Data Privacy and Data Protection), “Recommended Lawyers”, 2023
  • Southern California “Rising Star” (2014-2018)
  • Southern California “Top 50 Up-And-Coming Women Attorneys” (2017)