DisclosureLens
UnknownGovernment IDCritical

J.P. Morgan Chase Bank, N.A.-Addendum

bd_7c58e691e71db2b9 · schema v1 · pii pii-v1

Severity

Critical

Discovered

Feb 26, 2024

Filed

Apr 18, 2024

To disclose

7 weeks

Affected · nationwide

451,8092,394 in this filing

Confidence

95%
Full breach record for J.P. Morgan Chase Bank, N.A.-Addendum →

J.P. Morgan Chase Bank, N.A.-Addendum reported a data breach to the Delaware Attorney General. The breach occurred on 2021-08-26. It was discovered on 2024-02-26. Notice was filed on 2024-04-18. 2,394 Delaware residents were affected. 451,809 individuals affected in total. Information involved: identity government.

Delaware clock✓ DE credit monitoring due7 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

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed451,809 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.