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HomeIndustriesBanking & FinanceAmerican Express Alert: Cardholder Data Exposed in Third-Party Breach

American Express Alert: Cardholder Data Exposed in Third-Party Breach


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American Express (Amex) recently issued a security alert notifying cardholders of a data breach that potentially exposed their information through a third-party service provider.

While Amex emphasizes its own systems were not compromised, the incident raises concerns about the security of sensitive data within the broader financial ecosystem.

Understanding the Breach: Third-Party Vendor at Fault

According to Amex, the data breach occurred at a third-party service provider frequently used by their travel services division. The specific nature of the service provider and the cause of the breach have not been publicly disclosed. However, Amex assures customers that its own systems were not compromised during the incident.

Compromised Information and Potential Impact

The compromised information reportedly includes:

  • Card Member Names
  • Current and Previously Issued Card Account Numbers
  • Expiration Dates
  • Other Potential Card Details

While Amex maintains that the breach did not involve unauthorized access to cardholder financial information, such as Social Security numbers or PINs, the exposure of card details could still be exploited by malicious actors for fraudulent activities like:

  • Card-Not-Present Fraud: Fraudsters could use the stolen information to make unauthorized online purchases.
  • Identity Theft: The exposed data could be combined with information obtained from other sources to facilitate identity theft attempts.

10 Steps to Protect Yourself from Third-Party Data Breaches

While Amex is actively monitoring accounts for fraudulent activity and offering credit card replacement and fraud protection services, individual cardholders can take proactive steps to minimize the risk of financial losses:

  1. Review your Amex statements regularly: Monitor your statements for any suspicious activity, such as unauthorized charges or changes to your account information.
  2. Enable account alerts: Set up account alerts to receive notifications of suspicious activity on your card.
  3. Be cautious online: Avoid entering your card details on unfamiliar websites and be wary of phishing attempts designed to steal your information.
  4. Use strong passwords and multi-factor authentication: Implement strong and unique passwords for all your online accounts and enable multi-factor authentication (MFA) wherever available.
  5. Consider credit card monitoring services: Explore credit card monitoring services that can notify you of potential breaches or suspicious activity related to your card information.
  6. Request a credit report review: Regularly review your credit report for any unauthorized inquiries or accounts you did not open.
  7. Be mindful of social media sharing: Avoid sharing personal information, including your credit card details, on social media platforms.
  8. Shred sensitive documents: Properly shred any documents containing your card details before discarding them.
  9. Report suspicious activity: If you suspect your card has been compromised or encounter suspicious activity, report it to Amex immediately.
  10. Stay informed about data breaches: Keep yourself updated on data breaches and best practices to maintain a proactive approach to protecting your information.


The Amex data breach serves as a reminder of the importance of vigilance and proactive measures in protecting your financial information. By implementing these tips and staying informed about potential threats, you can significantly reduce your risk of falling victim to data breaches and other financial scams. Remember, it’s crucial to remain vigilant and take charge of your financial security in today’s evolving digital landscape.

Ouaissou DEMBELE
Ouaissou DEMBELEhttps://cybercory.com
Ouaissou DEMBELE is an accomplished cybersecurity professional and the Editor-In-Chief of cybercory.com. He has over 10 years of experience in the field, with a particular focus on Ethical Hacking, Data Security & GRC. Currently, Ouaissou serves as the Co-founder & Chief Information Security Officer (CISO) at Saintynet, a leading provider of IT solutions and services. In this role, he is responsible for managing the company's cybersecurity strategy, ensuring compliance with relevant regulations, and identifying and mitigating potential threats, as well as helping the company customers for better & long term cybersecurity strategy. Prior to his work at Saintynet, Ouaissou held various positions in the IT industry, including as a consultant. He has also served as a speaker and trainer at industry conferences and events, sharing his expertise and insights with fellow professionals. Ouaissou holds a number of certifications in cybersecurity, including the Cisco Certified Network Professional - Security (CCNP Security) and the Certified Ethical Hacker (CEH), ITIL. With his wealth of experience and knowledge, Ouaissou is a valuable member of the cybercory team and a trusted advisor to clients seeking to enhance their cybersecurity posture.


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