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Chick-fil-A Data Breach: Credential Stuffing Compromises Customer Accounts

Chick-fil-A Data Breach: Credential Stuffing Compromises Customer Accounts

First seen 23 Jul 2026, 01:23 UTC • •
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ThreatCluster AI
ThreatCluster •July 24, 2026 at 01:16 UTC
  • •Chick-fil-A's loyalty accounts were compromised through credential stuffing attacks.
  • •The breach potentially exposed personal information of customers in 10 states.
  • •Chick-fil-A took immediate action by securing accounts and restoring balances.

Chick-fil-A reported a data breach affecting its Chick-fil-A One loyalty accounts due to credential stuffing attacks that occurred between June 17 and June 19, 2026. The attackers used stolen usernames and passwords acquired from a third-party source to access customer accounts. The company detected suspicious login activity and confirmed on July 13 that unauthorized parties may have accessed customer data. Potentially exposed information includes names, email addresses, membership numbers, mobile pay details, QR codes, and the last four digits of credit/debit card numbers. Customers in 10 states, including Texas and Massachusetts, were notified of the breach. Chick-fil-A has since forced log-outs, removed payment methods, restored account balances, and added rewards for affected customers. The incident highlights the risks associated with credential reuse and the importance of multi-factor authentication.

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Timeline

2026-06-17
Credential stuffing attack initiated
Unauthorized parties launched automated attacks against Chick-fil-A's website and app using stolen credentials.
Techtimes
2026-06-19
Credential stuffing attack concluded
The attack on Chick-fil-A's systems ended, having targeted customer accounts for three days.
Techtimes
2026-07-13
Investigation confirms data access
Chick-fil-A concluded that unauthorized parties may have accessed customer information in affected accounts.
Bleepingcomputer
2026-07-20
Breach notification letters sent
Chick-fil-A began notifying affected customers about the data breach and potential exposure of their information.
Foxbusiness
2026-07-22
Public disclosure of breach
Chick-fil-A publicly disclosed the data breach and the measures taken to secure affected accounts.
Cbsnews
2026-07-23
Ongoing security enhancements
Chick-fil-A announced continued efforts to enhance security and monitoring to prevent future incidents.
Fox5Atlanta

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