MalwareHospitalityHospitalityRansomwareData ExfiltratedCustomer Data InvolvedFinancial accountIdentity (basic)LowContained

Starwood Hotels & Resorts Worldwide, LLC

bd_6d35b50af05c66af · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 20, 2015

Filed

Jan 22, 2016

To disclose

9 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Starwood Hotels & Resorts Worldwide, LLC →4 incidents on file

Starwood Hotels & Resorts Worldwide, Inc. filed a supplemental notice with the Washington AG regarding a malware intrusion affecting POS systems at multiple North American hotels. The malware collected payment card data (names, numbers, CVVs, expiration dates) from November 2014 through October 2015. Starwood engaged forensic experts, notified law enforcement, and offered one year of credit monitoring. No specific count of affected individuals was disclosed.

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Incident timeline

undetected · 380 days

discovery → filing · 9 weeks / 63 days

Nov 5, 2014

Begins

Nov 20, 2015

Discovered

Jan 22, 2016

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Hunton & Williams LLP
norm: hunton williams

Name: Starwood Hotels & Resorts Worldwide, LLC
norm: starwood hotels resorts
Industry: Hospitalityllm

Discovered: Nov 20, 2015
Breach occurred: Nov 5, 2014 – Oct 23, 2015
Undetected for: 380 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 20, 2015
Affected individuals: Not disclosed
Data types: Financial accountIdentity (basic)
Data elements: Financial account numberName
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Unknown
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1052 Exfiltration Over Physical Medium
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Office of the Attorney General

During the incident: Engaged third-party forensic experts to conduct an extensive investigation
Working closely with law enforcement authorities
Coordinating efforts with payment card organizations
Offering identity protection and credit monitoring services to affected customers for one year at no cost
Changes made: Implemented additional security measures to help prevent this type of crime from reoccurring
Affected hotels took steps to secure customer payment card information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/BreachM9607.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 22, 2016
Raw hash: d10a918a4d1e2551a2c4241adf56692954643fc0178df1c73f4ac27562e9ce72

Reporting entityHunton & Williams LLP

Victim entityStarwood Hotels & Resorts Worldwide, LLC

Incidentdiscovered Nov 20, 2015

Stated responseEngaged third-party forensic experts to conduct an extensive investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com