HackingOtherCustomer Data InvolvedFinancial accountPIILowContained

HYATT HOTELS CORPORATION

bd_bfd81870eddbe220 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 7, 2017

Filed

Oct 12, 2017

To disclose

14 weeks

Affected

28state residents only

Linked

6 filings

Confidence

66%

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

Hyatt Hotels Corporation notified the NH Attorney General of a security incident affecting 28 NH residents. Unauthorized access to payment card data (names, numbers, CVVs) occurred at certain managed/franchised locations between March 18 and July 2, 2017. Hyatt discovered suspicious activity on July 7, 2017, engaged third-party experts, and began notifying affected individuals on October 12, 2017.

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Incident timeline

undetected · 111 days

discovery → filing · 14 weeks / 97 days

Mar 18, 2017

Begins

Jul 7, 2017

Discovered

Oct 12, 2017

Filed

vs. sector median

+6 wks slower

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

Show 1 more filing ↓

Washington State AGbd_7c8b3aa1bbff52c42017-10-12Verified

Name: BAKER & HOSTETLER LLP
norm: baker hostetler

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

Discovered: Jul 7, 2017
Breach occurred: Mar 18, 2017 – Jul 2, 2017
Undetected for: 111 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 12, 2017
Affected individuals: 28state-resident count only
Data types: Financial accountPII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General

During the incident: Launched a comprehensive investigation
Engaging leading third-party experts
Engaging payment card networks
Engaging authorities
Set up a call center staffed with dedicated support specialists
Changes made: Implemented enhanced cybersecurity measures
Implemented additional layers of defense
Continuing to evaluate its security measures and processes to identify where additional improvements are necessary
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 14 weeks(97 days from discovery to filing)
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

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 · 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://mm.nh.gov/files/uploads/doj/remote-docs/hyatt-hotel-20171012.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: e8683616e14bca7a955211bd15dca1af1ee51f1e0ae44abdb2e2e27c2c2bad99

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityBAKER & HOSTETLER LLP

Victim entityHYATT HOTELS CORPORATION

Incidentdiscovered Jul 7, 2017

Stated responseLaunched a comprehensive investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov