Case file: Marriott International
Every government filing on this incident, the dates as stated, and the days to notice against each state's statute. Built from the records on Nov 9, 2026, agency link on every row. Not legal advice.
The incident
- Breach window
- Not stated in the filings
- Discovered
- Sep 4, 2019, as stated in the California letter
- State and federal records
- 1 filing, Oct 30, 2019
- Residents counted
- No state publishes a resident count for this incident
- Everyone affected
- No filing gives a total
- Information exposed
- Social Security number, Postal address
- Offered to those affected
- 12 months of credit or identity monitoring through Experian
- Third party named
- Yes, the letter attributes the incident to a vendor or service provider
- Days to notice
- Past the statutory period in California, counted from discovery to the state's first record
- Prior incidents
- 1 earlier incident on record for this organization
The letter: "What Happened Marriott learned on September 4, 2019, that an unknown person gained access to information about certain Marriott associates by accessing the network of an outside vendor formerly used by Marriott."
Filings
| Agency | Record date | People | In total | Days to notice | Links |
|---|---|---|---|---|---|
| California California AG | Oct 30, 2019 | Not published | 56 days, statute 30 days, over | Letter Record |
People is the count the filing gives, residents of the state unless marked total. Days to notice runs from the discovery date the letter states, or from the end of the breach window when no letter states one, to the date on the state's first record of the incident. "Over" marks a count past the days the state's statute allows for notice to residents. The statute's trigger is a question of fact, the days are arithmetic.
Notice timing, state by state
- 56 days from discovery (Sep 4, 2019) to the California record (Oct 30, 2019). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
The statutes
- California: 30 days to notify residents from discovery or notification of the breach, Cal. Civ. Code § 1798.82. Sample notice to the Attorney General when more than 500 Californians are notified, within 15 days of the consumer notice (effective 2026).
Prior incidents by Marriott International
| Records | Breach window | Filed with | People |
|---|---|---|---|
| Nov 30, 2018 | Apr 15, 2014 to Sep 10, 2018 | Oregon, California | 500,000,000 total |
Filings more than six months apart are shown as separate incidents.
Sources and method
Records as published by California AG. Letter facts (discovery date, monitoring, third party) are read from the consumer letter the agency posted, 1 letter read for this incident, and quoted so you can check them. Texas and HHS publish no letters. First-seen times on each record page. Spot an error? Email support@breachtally.com with this page link.