JPMorgan Chase Bank, National Association
bd_dbf47c9200986836 · schema v1 · pii pii-v1
Full breach record for JPMorgan Chase Bank, National Association →94 incidents on fileJPMorgan Chase Bank, N.A. notified Massachusetts residents that counter checks for checking accounts ending in XXXX were mistakenly issued to another customer. The incident involved the disclosure of names, addresses, and account numbers. The bank reimbursed affected accounts and closed them to prevent further misuse. The notification, dated July 2, 2026, provides instructions for placing security freezes and fraud alerts.
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Incident timeline — partial
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Breach window unknown
Jul 2, 2026
Filed
No interval is drawn: no breach start or discovery date is on record for this filing.
Linked disclosures
Why this link?Regulatory filings (6) · sorted by filing gap
- Indiana State AGbd_159fa593ce8a1c342026-07-28 · +26dVerified
- Massachusetts State AGbd_9f80e2fcd69053b82026-07-30 · +28dCandidate
- Indiana State AGbd_6a1ee0f106d534032026-06-02 · +30dVerified
- Massachusetts State AGbd_3cf8d0ee938cfeb22026-05-22 · +41dCandidate
Show 2 more filings ↓Show fewer ↑up to 57d gap
- Massachusetts State AGbd_497aaeadd482a2592026-05-15 · +48dCandidate
- Massachusetts State AGbd_11d6effbd2fe355f2026-05-06 · +57dCandidate
Filing propagation · 7 filings · 2 states
View merged incident ↗Pattern: first filing May 6 (MA), last Jul 30 (MA) — a 85-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.