HackingHospitalityHospitalityData ExfiltratedCustomer Data InvolvedPCIFinancial accountLowResolved

HYATT HOTELS CORPORATION

bd_278fdf50e5a5cf70 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Oct 12, 2017

To disclose

—

Affected

Not disclosed

Linked

6 filings

Confidence

65%

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

Hyatt Hotels Corporation reported unauthorized access to payment card information at certain Hyatt-managed locations between March 18, 2017, and July 2, 2017. The incident involved cardholder name, card number, expiration date, and internal verification code from cards manually entered or swiped at the front desk. Hyatt engaged third-party experts and authorities to investigate and implemented enhanced cybersecurity measures. The specific payment cards affected could not be identified.

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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

Montana State AGbd_0870ccb3554d9ca82017-10-12Candidate
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: —
Affected individuals: Not disclosed
Data types: PCIFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Launched a comprehensive investigation to understand what happened and how this occurred
Engaging leading third-party experts, payment card networks and authorities
Changes made: Implemented enhanced cybersecurity measures and 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 ↗

Montana 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

California 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://oag.ca.gov/ecrime/databreach/reports/sb24-102651
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: 87fcf7cb053500c9b71e9efdbd7a1cdb51ab2d85120ec57e0d063fd5405e8061

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityHYATT HOTELS CORPORATION

Victim entityHYATT HOTELS CORPORATION

IncidentUnauthorized Access

Stated responseLaunched a comprehensive investigation to understand what happened and how this occurred

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov