DisclosureLens
HackingFinancial ServicesFinanceData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)Identity (basic)Government IDFinancial accountMediumContained

JPMorgan Chase Bank, National Association

bd_b03855e42a8e4515 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 27, 2025

Filed

Jan 12, 2026

To disclose

11 weeks

Affected · nationwide

6591 in this filing

Confidence

66%
Full breach record for JPMorgan Chase Bank, National Association →93 incidents on file

JPMorgan Chase Bank, N.A. reported a data breach affecting 659 individuals, including 1 Maine resident. The incident occurred on October 23, 2025, at Fried, Frank, Harris, Shriver & Jacobson LLP, counsel to a J.P. Morgan conduit fund. An unauthorized third party compromised a shared network drive and copied files containing names, account numbers, SSNs, and passport numbers. JPMorgan conducted an independent review and is offering 24 months of credit monitoring.

Maine clockDiscovered Oct 27, 2025 → Filed with AG Jan 12, 202677d ⏱ ME AG >30d11 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 · 4 days
discovery → filing · 11 weeks / 77 days

Oct 23, 2025

Begins

Oct 27, 2025

Discovered

Jan 12, 2026

Filed

vs. sector median

+3 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed659 affectedView incident

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.