BreachCensus

Marriott International

United States of America

Marriott International is an organisation in Massachusetts. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register and the Wisconsin DATCP data breach list with 2 confirmed incidents; the most recent notice was filed on October 30, 2019.

Data as of September 6, 2026.

Confirmed incident

Filed in MA and CA

The same incident was filed separately with 2 jurisdictions within a few days of each other (MA and CA) — shown here as one incident.

Disclosed
October 30, 2019

Timeline

  1. October 30, 2019
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. October 30, 2019
    Reported to regulator Regulator

    MA AG breach notification: 3 Massachusetts residents affected

    source
What a Massachusetts notice means

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

What a California notice means

Governed by Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

Confirmed incident

US-WI

Disclosed
November 30, 2018

Timeline

  1. November 30, 2018
    Reported to regulator Regulator

    WI AG breach notification: an unknown number of Wisconsin residents affected

    source
What a Wisconsin notice means

Governed by Wis. Stat. §134.98. No state agency must be notified. Affected individuals must be told within 45 days, and the national credit bureaus too when 1,000 or more people are notified; DATCP lists breaches reported to it or found to affect Wisconsin consumers.

Note: the count is Wisconsin residents only when published, not a total; many notices do not include one.

Wisconsin breach-notification register ↗