HackingHospitalityHospitalityStolen CredentialsData ExfiltratedCustomer Data InvolvedPCIFinancial accountIdentity (basic)MediumContained

Grand Sierra Resort

bd_50d6ffaa95fd74fb · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 29, 2015

Filed

Jun 10, 2016

To disclose

36 weeks

Affected

1,061state residents only

Linked

5 filings

Confidence

69%

Full breach record for Grand Sierra Resort →

Grand Sierra Resort notified Washington AG of unauthorized access to payment card data (names, card numbers, Track 1/2 data) at food/retail locations from Feb 2014 to Aug 2015. Discovered Sept 2015 via law enforcement. 1,061 WA residents affected. Notices sent June 2016. Forensics retained; security measures enhanced.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 587 days

discovery → filing · 36 weeks / 255 days

Feb 19, 2014

Begins

Sep 29, 2015

Discovered

Jun 10, 2016

Filed

This filing is one of 5 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_2dfd5c9b2d3b25cf2016-06-10Verified
Massachusetts State AGbd_a2fead94c37f7a7c2016-06-13 · +3dVerified
California State AGbd_d253b1f7ceed961d2016-06-13 · +3dVerified
Montana State AGbd_7cd434b55e71997e2016-06-06 · +4dCandidate

Name: MEI-GSR
norm: mei-gsr

Name: Grand Sierra Resort
norm: grand sierra resort
Industry: Hospitalityllm

Discovered: Sep 29, 2015
Breach occurred: Feb 19, 2014 – Aug 6, 2015
Undetected for: 587 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 6, 2016
Affected individuals: 1,061state-resident count only
Data types: PCIFinancial accountIdentity (basic)
Data elements: Financial account numberName
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 500+dexposure 500+d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Office of the Attorney General (Washington)
Initial access: exploit_public_facing

During the incident: Cooperated with law enforcement
Retained third party forensics investigators
Enhanced existing security measures to prevent further unauthorized access
Provided guidance on how to protect against identity theft and fraud
Established a dedicated hotline for potentially affected individuals
Provided written notice to other state regulators and the national consumer reporting agencies
Changes made: Enhanced existing security measures to prevent further unauthorized access to customer payment information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 36 weeks(255 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Montana State AGJun 6 · first

New Hampshire State AG+4d

Washington State AG+4d · this page

Massachusetts State AG+7d

California State AG+7d

Pattern: first filing Jun 6 (MT), last Jun 13 (CA) — a 7-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM9625.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 10, 2016
Raw hash: d7971c02c7edd6a9597e6646deb94b9b2d436ae07291d202bd5ef7b0f7d00fce

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityMEI-GSR

Victim entityGrand Sierra Resort

Incidentdiscovered Sep 29, 2015

Stated responseCooperated with law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com