AccidentalFinancial ServicesFinanceMisdeliveryCustomer Data InvolvedPIIIdentity (basic)LowContained

American Express National Bank

bd_809975b7415e6a43 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 19, 2025

Filed

Apr 23, 2025

To disclose

9 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for American Express National Bank →

American Express National Bank disclosed that on February 19, 2025, some personal information related to High Yield Savings Account customers was inadvertently disclosed to an unauthorized third party. The bank is monitoring accounts for fraud and offering two years of complimentary Experian IdentityWorks identity theft protection.

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Incident timeline

discovery → filing · 9 weeks / 63 days

Feb 19, 2025

Begins

Feb 19, 2025

Discovered

Apr 23, 2025

Filed

vs. sector median

1 wks faster

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

Name: American Express National Bank
norm: american express national bank

Name: American Express National Bank
norm: american express national bank
Industry: Financial Servicesllm

Discovered: Feb 19, 2025
Breach occurred: Feb 19, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PIIIdentity (basic)
Attack vector: Unknown

During the incident: Actively monitoring your account for any signs of fraud
Offering you added, third-party protection, free of charge
Changes made: Offering you a complimentary two-year membership with Experian IdentityWorks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://oag.ca.gov/ecrime/databreach/reports/sb24-601790
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 23, 2025
Raw hash: d2d312702fd5ca78fb9d844d882cb47c04faac0cca46fcdba7b9276fc9d724d8

Reporting entityAmerican Express National Bank

Victim entityAmerican Express National Bank

Incidentdiscovered Feb 19, 2025

Stated responseActively monitoring your account for any signs of fraud

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov