HackingFinancial ServicesFinanceCustomer Data InvolvedIdentity (basic)Financial accountLowContained

ONEMAIN FINANCIAL GROUP, LLC

bd_ddcdcd03e9a13cab · schema v1 · pii pii-v2

Severity

Low

Discovered

May 1, 2026

Filed

Sep 25, 2026

To disclose

21 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

69%

Full breach record for ONEMAIN FINANCIAL GROUP, LLC →7 incidents on file

OneMain Financial Group, LLC notified the California Attorney General of unauthorized activity on its systems discovered in May 2026. Evidence indicates personal information, including names, addresses, and account-related data, was accessed or acquired between May 5 and May 8, 2026. The company engaged a forensic firm, contained the activity, and is offering 24 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

California clockDiscovered May 1, 2026 → Notified Sep 28, 2026150d ✗ CA 30-day late21 weeks discovery → filing

Incident timeline

May 5, 2026

Begins

Sep 25, 2026

Filed

vs. sector median

+13 wks slower

This filing is one of 6 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Texas State AGbd_0200cf822cabde802026-09-25Candidate
South Carolina State AGbd_eb0c71d52ddcf4ce2026-09-25Verified
Oregon State AGbd_95a867a6d181411c2026-09-28 · +3dVerified
Indiana State AGbd_fa59c8e33a14c3f12026-09-28 · +3dVerified

Show 1 more filing ↓up to 5d gap

Vermont State AGbd_a4d2e36fdce8fe842026-09-30 · +5dVerified

Name: ONEMAIN FINANCIAL GROUP, LLC
norm: onemain financial

Name: ONEMAIN FINANCIAL GROUP, LLC
norm: onemain financial
Industry: Financial Servicesllm

Discovered: May 1, 2026
Breach occurred: May 5, 2026 – May 8, 2026
Materiality determined: —
Notification sent: Sep 28, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Acted quickly to stop the activity
Began working with a leading cybersecurity and forensic firm to investigate what happened
Implemented enhanced security and monitoring controls
Changes made: Offering complimentary access to Credit Monitoring and Identity Protection Services through TransUnion
Remain committed to ongoing information security reviews to strengthen security and privacy programs and controls
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 21 weeks(147 days from discovery to filing)
Compliance flags: CA 30-day late · 150dCA AG copy ≤15d
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: May 1, 2026
→ Notified: Sep 28, 2026
150d 30 calendar days CA 30-day late
California
Consumers notified: Sep 28, 2026
→ AG copy submitted: Sep 25, 2026
— 15 calendar days CA AG copy ≤15d

Statute	Window	Elapsed	Threshold	Status
California	Discovered: May 1, 2026 → Notified: Sep 28, 2026	150d	30 calendar days	CA 30-day late
California	Consumers notified: Sep 28, 2026 → AG copy submitted: Sep 25, 2026	—	15 calendar days	CA AG copy ≤15d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Texas State AGSep 25 · first

South Carolina State AGSep 25 · first

California State AGSep 25 · first · this page

Oregon State AG+3d

Indiana State AG+3d

Vermont State AG+5d

Pattern: first filing Sep 25 (TX), last Sep 30 (VT) — a 5-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://oag.ca.gov/ecrime/databreach/reports/sb24-630345
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 25, 2026
Raw hash: e55861d3da27a966c961bf0526cbffe156287b74b73d006fad7d0bddd47b86e2

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityONEMAIN FINANCIAL GROUP, LLC

Victim entityONEMAIN FINANCIAL GROUP, LLC

Incidentdiscovered May 1, 2026

Stated responseActed quickly to stop the activity

ComplianceCA 30-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov