Every public data breach

Disclosed this week47On record26,367

47 disclosed this week · 26,367 on record

Marriott International

Disclosed Oct 16, 201775 affectedConfirmed

Official notice

What is known

People affected75 (as reported by the organization)
DisclosedOct 16, 2017
HappenedSep 19, 2017
AttackNot stated
Data exposedNot stated
SectorHospitality · US
StatusConfirmed

Sources

Official noticein.gov
Indiana Attorney General 2017 data breach report: Marriott International

Notices filed

Residents of INOct 16, 2017
Indiana AG1 person

Other breaches at Marriott International

Social engineering at a Marriott hotel leads to theft of guest and card dataPhishing exposed payment cards and internal documents.PhishingHospitalityUSUnverifiedJul 6, 2022Breach, details not statedBreach notice filed with the California AG, details not stated.2,589 affectedHospitalityUSOct 30, 2019Starwood reservation database breach; UK ICO fine, FTC order and USD 52M states settlementHacking exposed names, addresses, phone numbers, emails, government IDs, dates of birth, payment cards and financial details. Reported to the California AG.Hacking500M affectedHospitalityUSNov 30, 2018Breach, details not statedBreach notice filed with the Indiana AG, details not stated.70 affectedHospitalityUSOct 19, 2015
History of this record
Added2026-09-25
First recordedby backfillSource

First seen 2026-09-25 (Indiana AG), confirmed by Indiana AG. Record counts are as reported. Not legal advice.

Everything about Marriott International