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Dueling Network

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Dueling Network suffered a data breach in March 2017, exposing 6.5 million user records including usernames, emails, and MD5-hashed passwords.

Records exposed
6,486,626 records
Breach date
Breach Mar 29, 2017
Last update
Updated Mar 31, 2020

What data was exposed?

Fields reported as compromised in this breach record.

Email addressesIP addressesPasswordsUsernames

Why does this breach matter?

In-depth analysis of the breach and its implications.

In March 2017, a data breach involving Dueling Network, an online Flash-based game modeled after the Yu-Gi-Oh trading card game, disclosed 6,486,626 records. The compromised database included usernames, email addresses, IP addresses, and passwords hashed with MD5—a method considered cryptographically weak. While the game itself was terminated in 2016 following a legal order, its forum remained active and was likely the source of the breach.

Impact Analysis

Understanding the scope and consequences of this breach.

User Impact
Users faced potential risk of personal information misuse and account compromise.
Business Impact
The breach undermined trust in the community and highlighted vulnerabilities in legacy systems.
Affected Sectors
  • Gaming
  • Online Communities
Geographic Impact
  • Global

What You Should Do

Recommended actions to take in response to this breach.

If You Were Affected

  • Immediately change passwords for any accounts where the same credential combination was used.
  • Enable multi-factor authentication on important accounts.
  • Monitor accounts for unauthorized access.

Preventive Measures

  • Regularly audit and update security protocols.
  • Use cryptographically secure hash functions such as SHA-256 for password storage.
  • Retire unsupported systems promptly to prevent leaving vulnerabilities exposed.

Frequently Asked Questions

Common questions about this breach and what it means for you.

Change any reused passwords promptly and enable additional account security measures like 2FA.

Attribution

Additional attribution provided with the breach record.

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