Credential stuffing attack triggers Chick-fil-A customer data breach
Change your passwords ASAP.
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- Chick-fil-A reported a data breach after attackers accessed customer accounts through a credential stuffing attack.
- Exposed data included names, emails, membership numbers, payment identifiers, QR codes, account balances, and partial card numbers.
- Chick-fil-A forced logouts, removed stored payment methods, restored balances, and added rewards to affected accounts.
- Customers should change reused passwords and watch for identity theft, phishing, fraud, and suspicious financial activity.
Key Takeaways by nexos.ai, reviewed by Cybernews staff.
American fast-food restaurant Chick-fil-A has filed data breach notifications with several state Attorneys General, stating that the accounts of an undisclosed number of customers were compromised in a credential-stuffing attack.
According to the report, unauthorized parties managed to gain access to an unknown number of Chick-fil-A One accounts between June 17th and June 19th, 2026.
The attackers launched a credential stuffing attack against the company’s website and mobile app.
A credential stuffing attack is an attack in which hackers use stolen passwords from large-scale data breaches at other companies to log in to various online services.
Attackers systematically check whether they can log in to a website by using login details from another website. However, this attack method only works if people reuse the same password for multiple online accounts, and if IT systems allow such automated attacks.
On July 13th, IT employees discovered that the personal information of Chick-fil-A customers was likely stolen.
According to the data breach notifications, this involved names, email addresses, Chick-fil-A One membership numbers, mobile pay numbers, QR codes, the last 4 digits of customers’ credit or debit card numbers, and the balance on customers’ accounts.
Dates of birth, phone numbers, and physical addresses may also have been exfiltrated if this information was added to customers’ Chick-fil-A One accounts.
As soon as Chick-fil-A discovered the incident, we immediately took action to protect customers’ accounts, which included forcing log-outs of affected accounts and removing any stored payment methods. We also restored impacted customers’ Chick-fil-A One account balances,the reports say.
The chain of fast food restaurants also added rewards to affected customers’ accounts as a way of saying sorry.
Since the data breach occurred because of stolen passwords, victims are advised to change their Chick-fil-A passwords as soon as possible.
“We urge you to choose a strong password and unique to Chick-fil-A,” the reports conclude.
Affected customers should also review credit reports and bank statements regularly and remain vigilant against identity theft.
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