MARRIOTT INTERNATIONAL, INC.
ent_019df1c62734587c032a23ebf27a5b4a
Disclosures
13
Leak Site · State AG · 6 jurisdictions
Multi-filing incidents
2
incidents joining 2+ filings here
Max affected reported
500,000,000
as filed · State AG SC
Leak-site claims
6
unverified actor claims
Identity resolution
- Canonical name
- MARRIOTT INTERNATIONAL, INC.
- Normalized
- marriott international— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- 225YDZ14ZO8E1TXUSU86
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- marriott.com
Disclosure history (13)newest first
- GLOBALLeak Siteas victim2026-03-27
Sheraton Hotels and Resorts, founded in 1937, is a global hospitality brand owned by Marriott International. It operates luxury hotels, resorts, and residential establishments globally, known for providing high-quality services and amenities. Its properties often offer conference facilities, meeting rooms, fitness centers and occasionally dining services, serving both leisure tourists and business travelers.
- GLOBALLeak Siteas victim2025-12-06
Book Directly & Save at any of our 9000+ Marriott Bonvoy Hotels. Choose from Luxury Hotels, Reso...
- GLOBALLeak Siteas victim2025-10-30
Book Directly & Save at any of our 9000+ Marriott Bonvoy Hotels. Choose from Luxury Hotels, Reso...
- GLOBALLeak Siteas victim2025-09-21
Marriott BonvoyTM, an award-winning travel program, offers a brand for every type of journey. Earn an...
- GLOBALLeak Siteas victim2025-08-17
Marriott International is a renowned multinational hospitality company, headquartered in Maryland, USA. Founded in 1927, it operates a broad portfolio of hotels and related lodging facilities globally. Offerings include diverse properties from luxury to economy chain brands. As of today, Marriott has more than 7,000 properties in over 130 countries and territories, making it one of the world's largest hotel companies.
- GLOBALLeak Siteas victim2024-12-13
Marriott International, Inc. operates, franchises, and licenses hotels and timeshare properties worldw...
- California State AGas victim2019-10-30
Marriott International notified California residents that an unknown person accessed associate information via a third-party vendor's network. The incident, discovered on September 4, 2019, involved names, addresses, and Social Security numbers of 1,552 California residents. Marriott terminated the vendor relationship and offered one year of identity monitoring.
- Massachusetts State AGas victim2019-10-30
Marriott International reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2019-10-30. 3 Massachusetts residents were affected. The report records the breach type as electronic.
- South Carolina State AGas victim2018-12-03
Marriott International disclosed a security incident involving the Starwood guest reservation database. Unauthorized access occurred starting in 2014. On Sept 8, 2018, an alert was received. The attacker copied and encrypted data. Up to 500 million guests affected; 327 million had PII including names, addresses, passport numbers, and some had encrypted payment card data. Notification began Nov 30, 2018.
- California State AGas victim2018-11-30
Marriott International disclosed unauthorized access to the Starwood guest reservation database. The intrusion occurred between 2014 and September 10, 2018, but was not detected until September 8, 2018. Approximately 500 million guests were affected. Data exposed included names, addresses, passport numbers, and encrypted payment card details. Marriott engaged forensic experts, contained the incident, and offered monitoring services.
- Montana State AGas victim2018-11-30
Marriott International disclosed a security incident involving the Starwood guest reservation database. Unauthorized access occurred since 2014. Data encrypted and copied by an unauthorized party. Approximately 500 million guests affected, including names, addresses, passport numbers, and encrypted payment card data. Notifications sent November 30, 2018.
- Oregon State AGas victim2018-11-30
Marriott International, Inc. reported a data breach to the Oregon Attorney General. The breach was reported on 2018-11-30. The breach occurred during 4/15/2014 - 4/15/2014. The breach was discovered on 11/19/2018. 500,000,000 individuals were affected. Notice was sent on 11/30/2018.
- Massachusetts State AGas victim2008-03-31
Marriott International, Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2008-03-31. 3 Massachusetts residents were affected. The report records the breach type as electronic.
Subsidiary disclosures (4)filed by group companies
◈ These filings were made by or about subsidiaries of MARRIOTT INTERNATIONAL, INC. — not by MARRIOTT INTERNATIONAL, INC. itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.
- South Carolina State AGvia Starwood Hotels & Resorts Worldwide, LLC2016-02-04
Starwood Hotels & Resorts Worldwide, Inc. filed a supplemental notice in South Carolina regarding a malware intrusion affecting point-of-sale systems at a limited number of North American hotels. The malware collected payment card data (names, numbers, security codes, expiration dates). The incident was first announced in November 2015. Starwood engaged forensic experts, worked with law enforcement and payment card organizations, and offered one year of free credit monitoring. No guest reservation or membership systems were impacted.
- Washington State AGvia Starwood Hotels & Resorts Worldwide, LLC2016-01-22
Starwood Hotels & Resorts Worldwide, Inc. filed a supplemental notice with the Washington AG regarding a malware intrusion affecting POS systems at multiple North American hotels. The malware collected payment card data (names, numbers, CVVs, expiration dates) from November 2014 through October 2015. Starwood engaged forensic experts, notified law enforcement, and offered one year of credit monitoring. No specific count of affected individuals was disclosed.
- California State AGvia Starwood Hotels & Resorts Worldwide, LLC2015-11-20
Starwood Hotels & Resorts Worldwide, Inc. disclosed a malware intrusion affecting point-of-sale systems at a limited number of hotels in North America. The malware, designed to collect payment card information (cardholder name, number, security code, expiration date), was active between November 2014 and October 2015. Starwood engaged forensic experts, notified law enforcement, and offered one year of credit monitoring to affected customers. The malware has been contained and no longer presents a threat.
- Massachusetts State AGvia Starwood Hotels & Resorts Worldwide, LLC2008-12-12
Starwood Hotels & Resorts Worldwide, Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2008-12-12. 2 Massachusetts residents were affected. The report records the breach type as electronic.