HackingHospitalityHospitalityStolen CredentialsTargetedCustomer Data InvolvedFinancial accountIdentity (basic)LowContained

HYATT HOTELS CORPORATION

bd_0870ccb3554d9ca8 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Oct 12, 2017

To disclose

—

Affected

14state residents only

Linked

6 filings

Confidence

64%

Full breach record for HYATT HOTELS CORPORATION →3 incidents on file

Hyatt Hotels Corporation disclosed unauthorized access to payment card information (card numbers, expiration dates, verification codes) at certain managed locations between March 18, 2017, and July 2, 2017. The incident affected a small percentage of guests who checked in during this period. Hyatt engaged third-party experts and authorities to investigate and resolved the issue.

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Incident timeline

Mar 18, 2017

Begins

Oct 12, 2017

Filed

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

California State AGbd_278fdf50e5a5cf702017-10-12Verified
Massachusetts State AGbd_367cd7b53d3b35da2017-10-12Verified
Oregon State AGbd_77367de9ad6997d42017-10-12Verified
Washington State AGbd_7c8b3aa1bbff52c42017-10-12Verified

Show 1 more filing ↓

New Hampshire State AGbd_bfd81870eddbe2202017-10-12Verified

Name: HYATT HOTELS CORPORATION
norm: hyatt hotels
Domain: hyatt.com

Name: HYATT HOTELS CORPORATION
norm: hyatt hotels
Domain: hyatt.com
Industry: Hospitalityllm

Discovered: —
Breach occurred: Mar 18, 2017 – Jul 2, 2017
Materiality determined: —
Notification sent: Jul 2, 2017
Affected individuals: 14state-resident count only
Data types: Financial accountIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Launched a comprehensive investigation
Engaged leading third-party experts
Engaged payment card networks
Engaged authorities
Changes made: Implemented enhanced cybersecurity measures
Implemented additional layers of defense
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

California State AGOct 12 · first

Massachusetts State AGOct 12 · first

Oregon State AGOct 12 · first

Washington State AGOct 12 · first

New Hampshire State AGOct 12 · first

Montana State AGOct 12 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://dojmt.gov/wp-content/uploads/Hyatt-Hotels.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 12, 2017
Raw hash: c36d5952cde2d7a77149161c073871c9b7c21e2c0d1b8d07e679fca668a34d29

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHYATT HOTELS CORPORATION

Victim entityHYATT HOTELS CORPORATION

IncidentUnauthorized Access

Stated responseLaunched a comprehensive investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov