HackingFinancial ServicesFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Nium, Inc.

bd_3bb937ef0b9b957c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 3, 2025

Filed

Dec 11, 2025

To disclose

5 weeks

Affected

1state residents only

Linked

3 filings

Confidence

67%

Full breach record for Nium, Inc. →2 incidents on file

Nium, Inc. notified the New Hampshire Attorney General of a security breach affecting one NH resident. On November 3, 2025, unauthorized access attempts resulted in the download of an old file containing the resident's PII (name, email, address, phone, SSN, DOB). Nium restricted access, reset accounts, and strengthened monitoring. Notification was sent to the resident on December 10, 2025, including credit monitoring services.

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Incident timeline

discovery → filing · 5 weeks / 38 days

Nov 3, 2025

Discovered

Dec 11, 2025

Filed

vs. sector median

3 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Nebraska State AGbd_5dc5caa290830d852025-12-10 · +1dVerified
Massachusetts State AGbd_5f564f87eade06172025-12-10 · +1dVerified

Name: Nium, Inc.
norm: nium
Domain: nium.com

Name: Nium, Inc.
norm: nium
Domain: nium.com
Industry: Financial Servicesllm

Discovered: Nov 3, 2025
Materiality determined: —
Notification sent: Dec 10, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General Consumer Protection & Antitrust Bureau
Initial access: exploit_public_facing

During the incident: Restricted the unauthorized party from accessing our file system
Conducted a detailed investigation
Reset the affected accounts
Performed a comprehensive review of the impacted files and the associated file system
Strengthened our monitoring to immediately detect and flag any such access attempts
Implemented additional security controls to further restrict and protect our file system
Provided impacted individuals with guidance on how to better protect against phishing attempts
Provided individuals with information on how to remain vigilant for impersonation scams
Offered complimentary credit monitoring services
Changes made: Planning to migrate to a new technology stack
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(38 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Nebraska State AGDec 10 · first

Massachusetts State AGDec 10 · first

New Hampshire State AG+1d · this page

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/nium-20251211.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 11, 2025
Raw hash: a87eda04e144cabb03063eabee98ec8c0e5d4fab264803e11a3eddf2725d2af1

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityNium, Inc.

Victim entityNium, Inc.

Incidentdiscovered Nov 3, 2025

Stated responseRestricted the unauthorized party from accessing our file system

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov