HackingFinancial ServicesFinanceStolen CredentialsDelayed DiscoveryMulti-Stage ChainIdentity (basic)Government IDFinancial accountHighContained

J.P. Morgan

bd_d35e9bad8d06eb14 · schema v1 · pii pii-v1

Severity

High

Discovered

Feb 26, 2024

Filed

May 6, 2024

To disclose

10 weeks

Affected

689state residents only

Linked

12 filings

Confidence

65%

J.P. Morgan notified Montana residents that unauthorized access to plan participant data occurred between August 2021 and February 2024. Three authorized system users, employed by J.P. Morgan customers or agents, ran reports including names, SSNs, and bank account numbers. J.P. Morgan addressed the issue, applied a software update, and offered two years of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 914 days

discovery → filing · 10 weeks / 70 days

Aug 26, 2021

Begins

Feb 26, 2024

Discovered

May 6, 2024

Filed

vs. sector median

+2 wks slower

This filing is one of 12 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Oregon State AGbd_d01cecde11f4e3e72024-05-02 · +4dVerified
California State AGbd_2f44509a28216b332024-04-29 · +7dVerified
Maine State AGbd_efe031254bd5408d2024-04-29 · +7dVerified
Oregon State AGbd_5db5795a826bccef2024-04-28 · +8dVerified by operator

Show 6 more filings ↓up to 25d gap

California State AGbd_17c628b4b6b443e32024-04-27 · +9dVerified by operator
Delaware State AGbd_1d6fdc652ca663ce2024-04-18 · +18dVerified
Vermont State AGbd_2c75438adc27bcc82024-04-18 · +18dVerified by operator
Indiana State AGbd_73b14aaa9ac08d8a2024-04-18 · +18dVerified
Washington State AGbd_8d03645db4f594c42024-04-18 · +18dVerified
Massachusetts State AGbd_9b265c593f7a32392024-05-31 · +25dCandidate

Showing first 10 of 11 linked disclosures.

Name: J.P. Morgan
norm: jp morgan
Domain: jpmorgan.com

Name: J.P. Morgan
norm: jp morgan
Domain: jpmorgan.com
Industry: Financial Servicesnaics map

Discovered: Feb 26, 2024
Breach occurred: Aug 26, 2021 – Feb 23, 2024
Undetected for: 914 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 689state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: valid_credentials

During the incident: Addressed the access issue
Applied a software update
Offered two years of free credit monitoring through Experian’s IdentityWorks
Changes made: Applied a software update
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(70 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 · 9 states

View merged incident ↗

Delaware State AGApr 18 · first

Vermont State AGApr 18 · first

Indiana State AGApr 18 · first

Washington State AGApr 18 · first

California State AG+9d

Oregon State AG+10d

California State AG+11d

Maine State AG+11d

Oregon State AG+14d

Montana State AG+18d · this page

Massachusetts State AG+43d

Pattern: first filing Apr 18 (DE), last May 31 (MA) — a 43-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 11 — the full spread may be wider.

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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1340.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 6, 2024
Raw hash: cc8c106674aaa1f6f190053378322d85303941d8e644203d75aeeeea48c36a63

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityJ.P. Morgan

Victim entityJ.P. Morgan

Incidentdiscovered Feb 26, 2024

Stated responseAddressed the access issue

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov