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Amex card data exposed at merchant processor
American Express warned that card numbers and details were exposed through a breach at a third-party merchant processor.
- Organisation
- American Express
- Disclosed
- 3 March 2024
- Affected
- Not stated
- Data
- Card numbers, expiry dates, names
- Attacker
- Unknown
- Severity
- major
- Region
- Global
- Source
- BleepingComputer ↗
Cite this
Nuffield Consulting, “Amex card data exposed at merchant processor”, The Daily Tech Wire outage & breach log, 3 Mar 2024. https://techwire.nuffieldconsulting.com/incidents/2024-03-03-american-express-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: BleepingComputer, https://www.bleepingcomputer.com/news/security/american-express-credit-cards-exposed-in-third-party-data-breach/.
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