Baydöner Data Breach Exposes 1.2 Million Customer Records

Overview

In March 2026, the popular Turkish restaurant chain Baydöner experienced a significant data breach. The compromised customer data was later published on a public hacking forum, making it widely accessible to cybercriminals. The breach impacted over 1.2 million customer accounts. While Baydöner has confirmed that payment and financial information was not affected, the scale and sensitivity of the exposed personal data make this a critical security incident. This breach highlights the ongoing risks to consumer data in the hospitality sector, a trend frequently covered in broader cybersecurity news.

What Was Exposed

The breach exposed a comprehensive set of personal information for 1,266,822 individuals. The core dataset includes:

• Email Addresses: The primary contact and login identifier for accounts.
• Plaintext Passwords: Passwords were stored unencrypted, meaning they were readable as-is by the attackers.
• Full Names
• Phone Numbers
• Cities of Residence

For a smaller subset of users, even more sensitive data was exposed:

• Turkish National ID Numbers
• Dates of Birth

The exposure of plaintext passwords is a severe security failure, as it immediately compromises account security on Baydöner’s platform and potentially on other services where users have reused the same password.

Potential Impact

The impact of this breach is severe due to the combination of data types. With email addresses, names, phone numbers, and locations exposed, victims face a high risk of targeted phishing attacks, smishing (SMS phishing), and identity theft. The plaintext passwords allow attackers to directly hijack Baydöner accounts and attempt to access other online accounts where the same credentials are reused-a practice known as credential stuffing.

For those whose national ID numbers and dates of birth were leaked, the risk escalates to fraudulent financial applications and more sophisticated forms of identity fraud, which can have long-term legal and financial consequences.

Recommendations

If you have ever created an account with Baydöner, take these steps immediately:

1. Change Your Baydöner Password: Log in to your account (if still accessible) and change your password to a new, strong, and unique one. Do not reuse this password anywhere else.
2. Change Compromised Passwords Elsewhere: If you used the same or a similar password for any other online service (especially email, banking, or social media), change those passwords immediately.
3. Enable Two-Factor Authentication (2FA): Activate 2FA on every account that offers it, starting with your primary email account. This adds a critical layer of security.
4. Beware of Phishing: Be extremely cautious of emails, texts, or calls claiming to be from Baydöner or other institutions asking you to verify details, click links, or provide information. Do not click on links in unsolicited messages.
5. Monitor Your Accounts: Keep a close eye on your financial statements and other online accounts for any suspicious activity.

How to Check If You’re Affected

The breach has been added to the “Have I Been Pwned” service. To check if your data was compromised:

1. Visit the dedicated breach page: https://haveibeenpwned.com/Breach/Baydoner
2. Enter your email address into the search bar on the main site. If your email appears in this breach, you should immediately follow the recommendations above. Even if your email is not listed, if you are a Baydöner customer, it is prudent to change your password as a precaution.