HackingRetail & ConsumerRetailStolen CredentialsData ExfiltratedCustomer Data InvolvedAuthenticationCredentialsFinancial accountIdentity (basic)MediumActive

The Neiman Marcus Group LLC

bd_c9c13c122b01f8b1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 1, 2021

Filed

Sep 30, 2021

To disclose

29 days

Affected

67,410state residents only

Linked

9 filings

Confidence

69%

Full breach record for The Neiman Marcus Group LLC →4 incidents on file

The Neiman Marcus Group, LLC reported unauthorized access to customer online accounts in May 2020. The incident affected 67,410 Washington residents. Compromised data included names, contact info, payment card numbers, gift card numbers, and usernames/passwords. NMG engaged Mandiant and notified law enforcement.

J jump to incidentP pin to compareR raw source

Washington clock✓ WA AG ≤30d29 days discovery → filing

Incident timeline

undetected · 487 days

discovery → filing · 29 days

May 2, 2020

Begins

Sep 1, 2021

Discovered

Sep 30, 2021

Filed

vs. sector median

5 wks faster

This filing is one of 9 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

Indiana State AGbd_07b35f770d21dca72021-09-30Verified
Massachusetts State AGbd_1d3567c71e8a237a2021-09-30Verified
California State AGbd_64f1e5518aec51d72021-09-30Verified
Delaware State AGbd_7461fbea0332a50a2021-09-30Verified

Show 4 more filings ↓up to 272d gap

Oregon State AGbd_a670c8d958ef4cd02021-09-30Verified
Maine State AGbd_3a2af85b6cddd9922021-10-01 · +1dVerified
New Hampshire State AGbd_bebd3db5bfb41f532021-10-04 · +4dVerified
Illinois State AGbd_432f7d547946f08c2021-01-01 · +272dCandidate

Name: The Neiman Marcus Group LLC
norm: the neiman marcus

Name: The Neiman Marcus Group LLC
norm: the neiman marcus
Industry: Retail & Consumerllm

Discovered: Sep 1, 2021
Breach occurred: May 2, 2020 – May 17, 2020
Undetected for: 487 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 9, 2021
Affected individuals: 67,410state-resident count only
Data types: Identity (basic)Financial accountCredentials
Data elements: NameFinancial account numberUsername + password
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 400-499dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement
Initial access: valid_credentials

During the incident: Engaged Mandiant, a leading cybersecurity expert
Notified federal law enforcement
Required an online account password reset for affected customers who had not changed their password since May 2020
Changes made: Continue to take actions to enhance its system security and safeguard information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 days(29 days from discovery to filing)
Compliance flags: WA AG ≤30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

Illinois State AGJan 1 · first

Indiana State AG+272d

Massachusetts State AG+272d

California State AG+272d

Delaware State AG+272d

Oregon State AG+272d

Washington State AG+272d · this page

Maine State AG+273d

New Hampshire State AG+276d

Pattern: first filing Jan 1 (IL), last Oct 4 (NH) — a 276-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/BreachA2124.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 30, 2021
Raw hash: c563d28d2c9024daf44a33b80d1f4c815792ba43c7cceb09c8db9dc64ae87685

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityThe Neiman Marcus Group LLC

Victim entityThe Neiman Marcus Group LLC

Incidentdiscovered Sep 1, 2021

Stated responseEngaged Mandiant, a leading cybersecurity expert

ComplianceWA AG ≤30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com