21c Museum Hotels

Disclosed Jul 28, 20179 years agoConfirmed

Official notice

What is known

People affected	Not stated in the sources we have
Disclosed	Jul 28, 2017
Happened	Aug 10, 2016
Attack	Not stated
Data exposed	Names, Payment cards, Emails, Passwords, Addresses, Names
Sector	Other · US
Status	Confirmed

Sources

Source	Kind
Maine Attorney General breach notice archive: 21c Museum Hotelsmaine.gov · Official notice	Official notice

Notices filed

Where	Filed	People
Maine AGresidents of ME	Jul 28, 2017	4

Other breaches at 21c Museum Hotels

Breach	Disclosed	Attack	Sector	Status	Affected
Disclosed Oct 15, 2021Oct 15, 20214 years ago	Oct 15, 20214 years ago	Not stated	Other	Confirmed	5,557

History of this record

2026-09-25 · added · backfill source

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

Everything about 21c Museum Hotels

New breaches by email

Wednesdays, only in weeks with newly disclosed breaches, the largest first.