Cybersecurity & Data Privacy

Marriott Hotel Guests Massive Data Breach and Theft

In April 2019, Lieff Cabraser was named to the Plaintiffs’ Steering Committee in the multidistrict privacy and data theft litigation arising from hotel giant Marriott’s 2018 data breach, In re: Marriott International Inc. Customer Data Security Breach Litigation, No. 2879 (JPML).

Background on the Case

On November 30th, 2018, the Marriott Hotel chain reported that data relating to up to 500 million guests had been accessed and copied via its Starwood reservations system. The compromised and stolen data includes names, addresses, credit card numbers, travel histories, and even passport information for some guests. The data attack started as early as 2014, and may well be the largest personal record theft of all-time of such detailed private data.

The data theft was discovered in early September 2018 but only just reported publicly. It affects Marriott properties including Sheraton, Westin, W Hotels, St. Regis, Four Points, Aloft, Le Méridien, Tribute, Design Hotels, Elements and the Luxury Collection.

Contact a Cybersecurity and Data Privacy Lawyer at Lieff Cabraser

If you suspect your data was stolen in the massive Marriot and Starwood hotels security breach, we urge you to contact a data privacy lawyer at Lieff Cabraser about your potential case using the form below. The information you provide will help us hold Marriott and its chain hotels accountable for any lapses in security and improper delays in reporting the breach.

Lieff Cabraser is Dedicated to Protecting and Preserving Privacy

Lieff Cabraser is committed to ensuring that the fundamental right to privacy is respected and endures even as technology evolves and society changes. Our attorneys possess extensive experience and the requisite technological background to successfully assert and litigate a comprehensive range of privacy claims. We represent individuals in precedent-setting cases impacting tens and even hundreds of millions of Americans against prominent technology, social media, and entertainment companies for violations of digital privacy rights and the failure to protect critically-sensitive personal and employee data.

Learn more about our major successes in digital privacy and data breach cases, including the recent $115 million data breach settlement on behalf of Anthem patients, the $68 million settlement for LifeLock subscribers, and the $13 million settlement for LinkedIn users.

First Name (required)

Last Name (required)

Email address (required)

Street Address





How did you find our site?

Are you currently represented by an attorney?

If you know or suspect that your Marriott Starwood stay data was stolen, please describe your experience:

Please sign me up for your Consumer Law newsletter. Yes