The Marriott Breach: What to do if Your Information Has Been Compromised
Privacy, Cyber & AI Decoded Alert | 1 min read
Dec 21, 2018
Risk Management Question
Are you one of 500 million guests whose personal and financial information was compromised in the recent breach of Marriott's guest reservation system?
The Issue
Marriott's guest reservation system may have compromised data including passport numbers, credit card numbers, email addresses, phone numbers, DOB, and arrival and departure information of not only Marriott guests, but also guests of the entire Starwood chain (think: major hotel names like Westin and Sheraton, among others). If you have stayed at the Marriott or any of the Starwood chain hotels within the past four years, it is likely your information has been compromised.
Risk Management Solution
If you have been a Marriott guest during this time period, assume your business and personal email accounts have been compromised, and be on the lookout for travel-related emails with detailed information about you and your family members. Follow our anti-phishing rules for any email you receive:
- Don't click on links in any electronic communications from Marriott or any Starwood chain hotel. If you must click, first call the hotel and confirm they sent it.
- Don't respond to voicemail messages, robo calls, or text messages from any Marriott or Starwood chain hotel. Don't call the number back. Instead, research the correct phone number and call the hotel or reservation system and confirm that they called you. The legitimate caller will not request any password by phone or email.
- Don't fall for a hacker's phishing email to provide any offers that sound too good to be true, such as: "We're sorry. Here is a free 2-night stay at any Marriott location."
- Closely monitor your credit cards to assess any suspicious activity.
- Change your passwords to any affected—or even unrelated—account.
- Consider signing up for Marriott's free WebWatcher enrollment.
As always, think before you click.
Related People
Related Capabilities
Featured Insights

Press Release
May 7, 2026
Hinshaw Recognized as a 2026 BTI Associate Satisfaction A-Lister Firm

Press Release
May 7, 2026
Pedro Hernandez Recognized at the 2026 ALM Florida Legal Awards Gala

Consumer Crossroads: Where Financial Services and Litigation Intersect
May 6, 2026
Second Circuit Rules New York Interest-on-Escrow Law is Preempted by National Bank Act

Privacy, Cyber & AI Decoded Alert
May 6, 2026
From Protection to Readiness: What Today’s Cyber Landscape Demands of Organizations

Press Release
Apr 30, 2026
Six-Attorney Team Joins Hinshaw’s Consumer Financial Services Group

In The News
Apr 29, 2026
Lauren Campisi Featured in the 20th Anniversary of Louisiana Super Lawyers Magazine

In The News
Apr 28, 2026
Matt Henderson Provides Media Insights as Conflict of Interest Lawsuits Target Law Firms

In The News
Apr 28, 2026
Akeela White Analyzes US House Hearing on Credit Reporting Compliance Reforms




