MalwareRetail & ConsumerRetailRansomwareSupply Chain (3P Vendor)Data ExfiltratedPIIPCIIdentity (basic)LowContained

West Music

bd_59c8c534f685fa21 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 6, 2017

Filed

Mar 3, 2017

To disclose

25 days

Affected

267state residents only

Linked

5 filings

Confidence

64%

Full breach record for West Music →3 incidents on file

West Music Company notified Montana residents of a third-party vendor breach involving Aptos. Unauthorized access occurred between Feb-Dec 2016 via malware, exposing PII and payment card data. Discovered Feb 6, 2017. Aptos engaged law enforcement and forensic firms.

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Incident timeline

undetected · 371 days

discovery → filing · 25 days

Feb 1, 2016

Begins

Feb 6, 2017

Discovered

Mar 3, 2017

Filed

vs. sector median

6 wks faster

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

Part of Aptos supply-chain incident (2017) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_761fbaedfa112ed72017-03-03Verified
California State AGbd_8bdbf4f87d6d6cea2017-03-03Verified
Oregon State AGbd_a420cc4322dee7ac2017-03-03Verified
Washington State AGbd_f500fe7fe6afa2492017-03-06 · +3dVerified

Name: West Music
norm: west music
Domain: westmusic.com

Name: West Music
norm: west music
Domain: westmusic.com
Industry: Retail & Consumerllm

Discovered: Feb 6, 2017
Breach occurred: Feb 1, 2016 – Dec 31, 2016
Undetected for: 371 daysoccurrence → discovery
Materiality determined: —
Notification sent: Feb 28, 2017
Affected individuals: 267state-resident count only
Data types: PIIPCIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Aptos contacted the FBI Cyber DivisionAptos contacted the U.S. Department of Justice
Third party: via Aptos
Initial access: supply_chain

During the incident: Engaged a cybersecurity firm to help contain and eliminate the issue
Established a call center specifically to help answer any questions
Changes made: Blocked the method of unauthorized access
Removed malware from the Aptos system
Actively monitoring the system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 days(25 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 ↗

New Hampshire State AGMar 3 · first

California State AGMar 3 · first

Oregon State AGMar 3 · first

Montana State AGMar 3 · first · this page

Washington State AG+3d

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/West-Music.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 3, 2017
Raw hash: 4dc694a0a509a3cff869c147768304d9e690252884159d7f2b8b3a2832cfd39c

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityWest Music

Victim entityWest Music

Incidentdiscovered Feb 6, 2017

Stated responseEngaged a cybersecurity firm to help contain and eliminate the issue

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov