HackingRetail & ConsumerRetailStolen CredentialsCustomer Data InvolvedData ExfiltratedIdentity (basic)Financial accountHighContained

Sam's Club

bd_9d8b96b56225f1ab · schema v1 · pii pii-v1

Severity

High

Discovered

Sep 24, 2020

Filed

Oct 22, 2020

To disclose

28 days

Affected · nationwide

285,8851,038 in this filing

Linked

10 filings

Confidence

64%

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

Sam's Club reported a data breach occurring between September 17 and 24, 2020, discovered on September 24, 2020. The incident involved account takeover via credential stuffing, affecting 285,885 individuals, including 1,038 in Maine. Compromised data included names and financial account numbers (credit/debit card numbers with security codes/PINs). Sam's Club notified consumers in writing on October 21, 2020, and offered 12 months of credit monitoring and ID restoration services through Experian.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Sep 24, 2020 → Filed with AG Oct 22, 202028d ✓ ME AG ≤30d28 days discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 7 days

discovery → filing · 28 days

Sep 17, 2020

Begins

Sep 24, 2020

Discovered

Oct 22, 2020

Filed

vs. sector median

3 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_08ecc982b2d6f96d2020-10-21 · +1dVerified
Indiana State AGbd_141e5312d6ac324c2020-10-21 · +1dVerified
Massachusetts State AGbd_1baae9e84867a9c82020-10-21 · +1dVerified
Montana State AGbd_4f6b4c84c24d1c432020-10-21 · +1dCandidate

Show 5 more filings ↓up to 7d gap

Oregon State AGbd_7843c49c2426c7f02020-10-21 · +1dVerified
Washington State AGbd_7d21906a2e56f1f32020-10-21 · +1dVerified
Delaware State AGbd_b5f7ad4d0323fe252020-10-21 · +1dVerified
New Hampshire State AGbd_cd60e531f69a19792020-10-26 · +4dVerified
South Carolina State AGbd_aa274a38b4804ce32020-10-29 · +7dVerified

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 24, 2020
Breach occurred: Sep 17, 2020 – Sep 24, 2020
Undetected for: 7 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 21, 2020
Affected individuals: 285,885state + nationwide
Data types: Identity (basic)Financial account
Data elements: Financial account number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1110 Brute ForceT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General's Office
Initial access: valid_credentials

During the incident: Sent written notification to affected consumers
Offered 12 months of credit monitoring and ID restoration services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 28 days(28 days from discovery to filing)
Compliance flags: ME AG ≤30d · 28dME CRA notice due
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 24, 2020
→ Filed with AG: Oct 22, 2020
28d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 24, 2020 → Filed with AG: Oct 22, 2020	28d	30 days	ME AG ≤30d

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

Montana State AGOct 21 · first

Oregon State AGOct 21 · first

Washington State AGOct 21 · first

Delaware State AGOct 21 · first

Maine State AG+1d · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/25ac0a8c-80fe-4d61-a982-4ae63bb15993.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 22, 2020
Raw hash: dbe158d2c43be29428d836d336c6e4943706ae62554edea52681a5fde386f5cc

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entitySam's Club

Victim entitySam's Club

Incidentdiscovered Sep 24, 2020

Stated responseSent written notification to affected consumers

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov