HackingRetail & ConsumerRetailData ExfiltratedCustomer Data InvolvedIdentity (basic)Financial accountCredentialsMediumActive

The Neiman Marcus Group LLC

bd_bebd3db5bfb41f53 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 1, 2021

Filed

Oct 4, 2021

To disclose

5 weeks

Affected

11,557state residents only

Linked

9 filings

Confidence

66%

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

Neiman Marcus Group, LLC notified the NH Attorney General on Sept 30, 2021, of a breach occurring in May 2020. Unauthorized access affected 11,557 NH residents, exposing names, contact info, payment card numbers, and credentials. Mandiant was engaged and law enforcement notified.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 488 days

discovery → filing · 5 weeks / 33 days

May 1, 2020

Begins

Sep 1, 2021

Discovered

Oct 4, 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

Maine State AGbd_3a2af85b6cddd9922021-10-01 · +3dVerified
Indiana State AGbd_07b35f770d21dca72021-09-30 · +4dVerified
Massachusetts State AGbd_1d3567c71e8a237a2021-09-30 · +4dVerified
California State AGbd_64f1e5518aec51d72021-09-30 · +4dVerified

Show 4 more filings ↓up to 276d gap

Delaware State AGbd_7461fbea0332a50a2021-09-30 · +4dVerified
Oregon State AGbd_a670c8d958ef4cd02021-09-30 · +4dVerified
Washington State AGbd_c9c13c122b01f8b12021-09-30 · +4dVerified
Illinois State AGbd_432f7d547946f08c2021-01-01 · +276dCandidate

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 1, 2020 – May 31, 2020
Undetected for: 488 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 30, 2021
Affected individuals: 11,557state-resident count only
Data types: Identity (basic)Financial accountCredentials
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified Office of the New Hampshire Attorney General

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: 5 weeks(33 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

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

Maine State AG+273d

New Hampshire State AG+276d · this page

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://mm.nh.gov/files/uploads/doj/remote-docs/neiman-marcus-group-20211004.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 4, 2021
Raw hash: a3576f5ca79cdb8433685489454aaf33bfd6f796c9a10f9556d0e2770b28708f

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov