HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedData ExfiltratedPIIIdentity (basic)Financial accountMediumContained

NATIONSTAR MORTGAGE LLC

bd_66a3873bc3c9facf · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 31, 2023

Filed

Dec 19, 2023

To disclose

7 weeks

Affected

77,568state residents only

Linked

11 filings

Confidence

66%

Full breach record for NATIONSTAR MORTGAGE LLC →11 incidents on file

Nationstar Mortgage LLC (dba Mr. Cooper) reported unauthorized access to network systems between Oct 30 and Nov 1, 2023, detected on Oct 31, 2023. Files containing personal information were obtained. 77,568 NH residents affected. Response included system shutdown, forensic investigation, law enforcement notification, and 24-month credit monitoring for affected individuals.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 1 days

discovery → filing · 7 weeks / 49 days

Oct 30, 2023

Begins

Oct 31, 2023

Discovered

Dec 19, 2023

Filed

vs. sector median

2 wks faster

This filing is one of 11 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

South Carolina State AGbd_c8e492a4998540cc2023-12-18 · +1dVerified
Delaware State AGbd_1649a1b2c61961c42023-12-15 · +4dVerified
California State AGbd_57eb457f3eb2112d2023-12-15 · +4dVerified
Montana State AGbd_5d5578f4cbaaad522023-12-15 · +4dVerified

Show 6 more filings ↓up to 352d gap

Maine State AGbd_94029d67f539973d2023-12-15 · +4dVerified
Oregon State AGbd_bcd8a251801840a22023-12-15 · +4dVerified
Massachusetts State AGbd_d73092edf21768402023-12-15 · +4dVerified
Washington State AGbd_ec18ec8370ea53762023-12-15 · +4dVerified
California State AGbd_0b70ea800f8666122024-03-22 · +94dVerified
Illinois State AGbd_d9053568a4f8d29b2023-01-01 · +352dCandidate

Name: NATIONSTAR MORTGAGE LLC
norm: nationstar mortgage

Name: NATIONSTAR MORTGAGE LLC
norm: nationstar mortgage
Industry: Financial Servicesllm

Discovered: Oct 31, 2023
Breach occurred: Oct 30, 2023 – Nov 1, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Dec 15, 2023
Affected individuals: 77,568state-resident count only
Data types: PIIIdentity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney GeneralContacted law enforcement
Initial access: valid_credentials

During the incident: Initiated response protocols
Launched an investigation with the assistance of cybersecurity experts
Contacted law enforcement
Shut down its systems to contain the incident
Locked down its systems
Changed account passwords
Restored its systems
Initiated a detailed review to identify personal information contained in the impacted files
Monitoring the dark web
Further enhancing the security of its systems
Changes made: Providing all current and former customers with access to credit monitoring services at no charge for a period of 24 months
Providing individuals with proactive fraud assistance
Providing information on how to place a fraud alert and security freeze on one’s credit file
Providing contact details for the national consumer reporting agencies
Providing information on how to obtain a free credit report
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(49 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 10 states

View merged incident ↗

Illinois State AGJan 1 · first

Delaware State AG+348d

California State AG+348d

Montana State AG+348d

Maine State AG+348d

Oregon State AG+348d

Massachusetts State AG+348d

Washington State AG+348d

South Carolina State AG+351d

New Hampshire State AG+352d · this page

California State AG+446d

Pattern: first filing Jan 1 (IL), last Mar 22 (CA) — a 446-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/nationstar-mortgage-dba-mr-cooper-20231219.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 19, 2023
Raw hash: 5c16880f88a2beddc6b8b154c789d073a34489ed3e3b2a6be0c1bf619cc3a7f6

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityNATIONSTAR MORTGAGE LLC

Victim entityNATIONSTAR MORTGAGE LLC

Incidentdiscovered Oct 31, 2023

Stated responseInitiated response protocols

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov