Hyatt Hotels

Disclosed Sep 23, 201610 years agoConfirmed

Official notice

What is known

People affected	Not stated in the sources we have
Disclosed	Sep 23, 2016
Discovered	Jul 7, 2017
Happened	Mar 18, 2017
Attack	Hacking
Data exposed	Names, Payment cards, Financial, Passwords
Sector	Hospitality · US
Status	Confirmed

Sources

Source	Kind
California Attorney General breach notice: Hyatt Hotelsoag.ca.gov · Official notice	Official notice
Washington Attorney General breach notice: Hyatt Hotelsatg.wa.gov · Official notice	Official notice
Oregon DOJ breach notice: Hyatt Hotelsjustice.oregon.gov · Official notice	Official notice
Maine Attorney General breach notice archive: Hyatt Hotelsmaine.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Maine AGresidents of ME	Sep 23, 2016	79
California AGresidents of CA	Oct 12, 2017
Washington AGresidents of WA	Oct 12, 2017	640
Oregon DOJresidents of OR	Oct 12, 2017	24,599
Maine AGresidents of ME	Oct 12, 2017	19

Other breaches at Hyatt Hotels

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Jan 14, 2016Jan 14, 201610 years agoHacking	Jan 14, 201610 years ago	Hacking	Hospitality	Confirmed	Unknown

History of this record

2026-09-25 · disclosed: 2017-10-12 to 2016-09-23 · backfill source
2026-09-25 · data_types: [] to ["names","payment-card","financial","passwords"] · backfill source
2026-09-25 · attack: unknown to hacking · backfill source
2026-09-25 · discovered: empty to 2017-07-07 · backfill source
2026-09-25 · added · backfill source

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

Everything about Hyatt Hotels

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