HackingFinancial ServicesFinanceStolen CredentialsDelayed DiscoveryMulti-Stage ChainCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

JPMorgan Chase Bank, National Association

bd_8d03645db4f594c4 · schema v1 · pii pii-v1

Severity

High

Discovered

Feb 26, 2024

Filed

Apr 18, 2024

To disclose

7 weeks

Affected

4,513state residents only

Linked

12 filings

Confidence

69%

Full breach record for JPMorgan Chase Bank, National Association →94 incidents on file

JPMorgan Chase Bank, N.A. disclosed that three authorized system users employed by J.P. Morgan customers or their agents accessed plan participant information between August 26, 2021, and February 23, 2024. The incident, discovered on February 26, 2024, involved unauthorized access via valid credentials to reports containing names, SSNs, and bank account numbers. 4,513 Washington residents were affected. Remediation included a software update and credit monitoring offers.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d7 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 914 days

discovery → filing · 7 weeks / 52 days

Aug 26, 2021

Begins

Feb 26, 2024

Discovered

Apr 18, 2024

Filed

vs. sector median

1 wks faster

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

Delaware State AGbd_1d6fdc652ca663ce2024-04-18Verified
Vermont State AGbd_2c75438adc27bcc82024-04-18Verified by operator
Indiana State AGbd_73b14aaa9ac08d8a2024-04-18Verified
California State AGbd_17c628b4b6b443e32024-04-27 · +9dVerified by operator

Show 6 more filings ↓up to 43d gap

Oregon State AGbd_5db5795a826bccef2024-04-28 · +10dVerified by operator
California State AGbd_2f44509a28216b332024-04-29 · +11dVerified
Maine State AGbd_efe031254bd5408d2024-04-29 · +11dVerified
Oregon State AGbd_d01cecde11f4e3e72024-05-02 · +14dVerified
Montana State AGbd_d35e9bad8d06eb142024-05-06 · +18dVerified by operator
Massachusetts State AGbd_9b265c593f7a32392024-05-31 · +43dCandidate

Showing first 10 of 11 linked disclosures.

Name: JPMorgan Chase Bank, Dearborn
norm: jpmorgan chase bank dearborn

Name: JPMorgan Chase Bank, National Association
norm: jpmorgan chase bank national
Industry: Financial Servicesllm

Discovered: Feb 26, 2024
Breach occurred: Aug 26, 2021 – Feb 23, 2024
Undetected for: 914 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 4,513state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: NameSocial Security numberFinancial account number
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 500+dexposure 500+d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Initial access: valid_credentials

During the incident: Promptly 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: 7 weeks(52 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

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 · this page

California State AG+9d

Oregon State AG+10d

California State AG+11d

Maine State AG+11d

Oregon State AG+14d

Montana State AG+18d

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA29152.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 18, 2024
Raw hash: 865f971c7b66f43370aa0fdc20614ec2593e55d4029538c309f30a910b4f9afb

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityJPMorgan Chase Bank, Dearborn

Victim entityJPMorgan Chase Bank, National Association

Incidentdiscovered Feb 26, 2024

Stated responsePromptly addressed the access issue

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com