Case Results of Ariana Joyce Tadler

Court-appointed member of Plaintiffs’ Steering Committee in class action relating to data breach impacting over 133 million American consumers against hotel chain Marriott (NASDAQ: MAR) and its data security vendor Accenture (NYSE: ACN). The Court recently issued an order to allow the case to proceed as a class action on behalf of the first group of claimants the parties selected – an initial group of approximately 45 million consumers in California, Connecticut, Florida, Georgia, Maryland, and New York. The lawsuit stems from a data breach Marriott discovered in 2018 after it acquired Starwood, in which, by its own admission, 133.7 million guest records of Starwood customers were compromised. Marriott acknowledged in 2019 that the records included approximately 5.25 million unencrypted passport numbers and 20.3 million encrypted passport numbers, among other sensitive personal information regarding hotel stays.

Court-appointed class counsel and led discovery in consumer class action relating to 2018 user data breach at Facebook, Inc.

Court-appointed member of Plaintiffs’ Steering Committee and led offensive discovery in consumer class action relating to September 2017 data breach at Equifax that disclosed Personal Identifiable Information (PII), including Social Security numbers, birth dates, addresses, and – in some instances – drivers’ license and credit card numbers of nearly 150 million consumers. Considered to be one of the most notorious and damaging breaches in history.

This appeal stems from a class action complaint alleging that Yahoo! Inc. and Aabaco Small Business, LLC (collectively, Yahoo) failed to employ sufficient security measures to protect class members’ personal information, resulting in multiple data breaches. The data breach impacted approximately 194 million users.

Following MicroStrategy Inc.'s announcement on March 20, 2000, that it had significantly overstated its revenue for the years 1998 and 1999, approximately two dozen class action securities fraud actions were filed in this district against MicroStrategy and other defendants.

Represented consumers in a class action accusing Target Corp. of failing to protect customers from a massive data breach during the holiday shopping season.

Court appointed Plaintiffs’ Liaison Counsel in 300+ coordinated class actions alleging securities fraud and market manipulation by and among 55 underwriters, 300+ corporate issuers, and hundreds of individuals associated with those issuers in connection with the rigging of initial public offerings (IPOs) during the late 1990s tech bubble.

Interim Lead Counsel in consumer class action involving the alleged misrepresentation of GMO food products as “all natural.” Front-line legal issues, innovative discovery negotiations and complex disputes and motions.

Lead counsel representing alternative energy company in its claims of negligence against one of the Big 4 accounting firms.