HackingRetail & ConsumerRetailStolen CredentialsBrute ForceCustomer Data InvolvedIdentity (basic)Financial accountLowContained

The Neiman Marcus Group LLC

bd_4c50b0577d8e8bc1 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 1, 2016

Filed

Jul 26, 2017

To disclose

19 months

Affected

Not disclosed

Confidence

64%

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

In January 2016, The Neiman Marcus Group detected unauthorized access to its mobile app environment via automated brute-force attacks using credentials stolen from other breaches. Attackers accessed customer names, addresses, phone numbers, last four digits of credit cards, expiration dates, and gift card account numbers. Full credit card numbers were not accessed. The company updated app security controls and required password resets for affected accounts.

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California clockDiscovered Jan 1, 2016 → Notified Jul 26, 2017572d ✗ CA 60-day late19 months discovery → filing

Incident timeline

discovery → filing · 19 months / 572 days

Jan 1, 2016

Begins

Jan 1, 2016

Discovered

Jul 26, 2017

Filed

vs. sector median

+72 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

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

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

Discovered: Jan 1, 2016
Breach occurred: Jan 1, 2016 – Jan 31, 2016
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 26, 2017
Affected individuals: Not disclosed
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1110 Brute Force
Threat actor: External
Initial access: valid_credentials

During the incident: Updated our app to provide additional data security controls
Required a password reset before your Neiman Marcus mobile app account can be used again
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 19 months(572 days from discovery to filing)
Compliance flags: CA 60-day late · 572d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jan 1, 2016
→ Notified: Jul 26, 2017
572d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jan 1, 2016 → Notified: Jul 26, 2017	572d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

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://oag.ca.gov/ecrime/databreach/reports/sb24-100573
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 26, 2017
Raw hash: a8a2caa09a885c1b995d30759ae15b10e502334c880f99c60e636723195b7120

Reporting entityThe Neiman Marcus Group LLC

Victim entityThe Neiman Marcus Group LLC

Incidentdiscovered Jan 1, 2016

Stated responseUpdated our app to provide additional data security controls

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov