Social EngineeringRetail & ConsumerRetailStolen CredentialsCustomer Data InvolvedIdentity (basic)Financial accountLowContained

Sam's Club

bd_4f6b4c84c24d1c43 · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 15, 2020

Filed

Oct 21, 2020

To disclose

5 weeks

Affected

704state residents only

Linked

10 filings

Confidence

66%

Full breach record for Sam's Club →2 incidents on file

Sam's Club notified Montana residents of a data breach in October 2020. Unauthorized parties used stolen login credentials (likely from a third-party source) to access member accounts in mid-September 2020. Affected data included names, contact info, membership IDs, and Cash Rewards balances. Sam's Club reset passwords, issued new membership numbers, held Cash Rewards, and offered one year of free credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 5 weeks / 36 days

Sep 15, 2020

Discovered

Oct 21, 2020

Filed

vs. sector median

2 wks faster

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

California State AGbd_08ecc982b2d6f96d2020-10-21Verified
Indiana State AGbd_141e5312d6ac324c2020-10-21Verified
Massachusetts State AGbd_1baae9e84867a9c82020-10-21Verified
Oregon State AGbd_7843c49c2426c7f02020-10-21Verified

Show 5 more filings ↓up to 8d gap

Washington State AGbd_7d21906a2e56f1f32020-10-21Verified
Delaware State AGbd_b5f7ad4d0323fe252020-10-21Verified
Maine State AGbd_9d8b96b56225f1ab2020-10-22 · +1dVerified
New Hampshire State AGbd_cd60e531f69a19792020-10-26 · +5dVerified
South Carolina State AGbd_aa274a38b4804ce32020-10-29 · +8dVerified

Name: Sam's Club
norm: sam s club
Domain: samsclub.com

Name: Sam's Club
norm: sam s club
Domain: samsclub.com
Industry: Retail & Consumerllm

Discovered: Sep 15, 2020
Materiality determined: —
Notification sent: Oct 21, 2020
Affected individuals: 704state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Phishing
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Reset your online password and sent you an email explaining how to create your new password
Issuing you a new membership number
Placing a temporary hold on any Cash Rewards currently in your account
Postponing the posting of new Cash Rewards
Arranged for one year of free identity protection and credit monitoring services through Experian
Changes made: Reset online passwords
Issued new membership numbers
Placed temporary holds on Cash Rewards balances
Offered one year of free identity protection and credit monitoring services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(36 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 10 states

View merged incident ↗

California State AGOct 21 · first

Indiana State AGOct 21 · first

Massachusetts State AGOct 21 · first

Oregon State AGOct 21 · first

Washington State AGOct 21 · first

Delaware State AGOct 21 · first

Montana State AGOct 21 · first · this page

Maine State AG+1d

New Hampshire State AG+5d

South Carolina State AG+8d

Pattern: first filing Oct 21 (CA), last Oct 29 (SC) — a 8-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://dojmt.gov/wp-content/uploads/sclubSamp.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 21, 2020
Raw hash: 0fe5ba73399489cfb4c7a16ab0f2087797c2afc27f36790bf12b37ad7665357c

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entitySam's Club

Victim entitySam's Club

Incidentdiscovered Sep 15, 2020

Stated responseReset your online password and sent you an email explaining how to create your new password

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov