Dueling Network
duelingnetwork.com
About This Breach
Online fan game site Dueling Network, a now-defunct Flash game based on the Yu-Gi-Oh trading card game got breached and exposed of its 6.5 million users email as well as poorly hashed passwords.
Data Exposed
Breach Details
| Breach Type | Data Breach |
| Searchable | Yes |
| Verified | Yes |
| Sensitive Data | No |
| Reference | https://hotforsecurity.bitdefender.com/blog/hacker-steals-6-5-million-accounts-from-yu-gi-oh-clone-17865.html (opens in new tab) |
Frequently Asked Questions
When did the Dueling Network data breach happen?
Dueling Network was breached in Mar 2017. The breach was added to the XposedOrNot index on November 8, 2023.
How many records were exposed in the Dueling Network breach?
6,488,767 records were exposed, making it the #170 largest of the 783 breaches in our index.
What data was exposed in the Dueling Network breach?
The exposed data includes: Usernames, Email addresses, Passwords, IP addresses.
What should I do if I was affected by the Dueling Network breach?
Change your password on the affected service (and anywhere you reused it), turn on two-factor authentication, and set up free breach alerts on XposedOrNot so you know the moment your email appears in a new breach.
More Entertainment Breaches
What Should You Do?
Change Your Passwords
Update your password immediately, using 12+ characters with numbers and symbols.
Enable Two-Factor Authentication
Add 2FA on all supported accounts using an authenticator app like Google Authenticator or Authy.
Review Device Security
Update your devices and browsers, and check for unauthorized logins.
Monitor Your Accounts
Set up login alerts and review account activity regularly for suspicious access.
Use a Password Manager
Never reuse passwords: use a password manager to generate unique ones for each account.