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American Express admits card data exposed and blames third party

ID: 458e8a4d-8f70-5eb7-bfa6-ad28d5bd26c8

STIX ID: report--458e8a4d-8f70-5eb7-bfa6-ad28d5bd26c8

Feed Name: The Register (Security)

Threat Score
55/100

Date Published: 2024-03-04

Date Updated: 2026-04-26

Author: Brandon Vigliarolo

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A third-party vendor's systems experienced unauthorized access that exposed American Express card numbers, expiration dates, names, and other card information; Amex says its own systems were not breached and has notified affected customers while advising account monitoring and enrollment in alerts.

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