Tianya
MEDIUM RISKData breach — December 2011
In December 2011, China's largest online forum known as Tianya was hacked and tens of millions of accounts were obtained by the attacker. The leaked data included names, usernames and email addresses.
search Check if you were affected — freeData exposed in this breach
What happened in the Tianya data breach?
In December 2011, China's largest online forum known as Tianya was hacked and tens of millions of accounts were obtained by the attacker. The leaked data included names, usernames and email addresses.
The exposed data included 3 types of personal information. Learn more about what a data breach means for you.
Quick answer — was Tianya hacked?
Yes. Tianya was breached in December 2011. The breach exposed 29,020,808 records including email addresses, names, usernames. This breach has been independently verified. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Tianya breach so dangerous?
The Tianya breach exposed 29,020,808 records — that is 29.0M people whose personal data is now circulating on the dark web. The combination of email addresses, names, usernames makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the Tianya breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Usernames — used to build profiles and target you with personalised scams
Is the Tianya breach still dangerous in 2026?
Yes. Stolen data from the Tianya breach remains dangerous years after the incident. Research shows that over 65% of stolen credentials from older breaches have never been changed by the account holders. Attackers routinely compile data from multiple breaches to build complete profiles, and credentials from 2011 are still actively used in credential stuffing attacks today.
Personal information like email addresses, phone numbers, and dates of birth never expire. Even if you changed your Tianya password, the other exposed data can be combined with information from other breaches to target you. Learn more about how long stolen data stays dangerous.
Frequently asked about the Tianya breach
Approximately 29,020,808 user records were exposed in the Tianya breach in December 2011.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Tianya password elsewhere and haven't changed it, those accounts remain at risk today.
Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Tianya dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Tianya password immediately, change any other account where you used the same password, enable two-factor authentication on all important accounts, and monitor for phishing emails over the next 90 days.
Who was affected by the Tianya breach?
The Tianya data breach affected approximately 29,020,808 users who had accounts with the service. With 29.0M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Tianya or used their services, your data may have been included in this breach. Check your email now to find out. You can also read our guide on what to do immediately after a data breach.
If your email was in the Tianya breach
Change your Tianya password immediately
Go to Tianya and change your password right now. Use a strong, unique password that you have never used anywhere else.
Change any account sharing that password
If you used the same password on other sites, change it on every one of them. Attackers test stolen credentials on hundreds of popular sites within hours.
Enable two-factor authentication
Turn on 2FA on Tianya and every important account. Even if your password is known, attackers cannot get in without the second factor.
Check your other accounts for this breach
Run a full email check to see every breach your email appears in — not just this one.
searchCheck all my breaches — freeOther major breaches
Was my email hacked?
Check if your email is compromised in seconds. Free, private, no signup. Scan 12 billion+ records across 970+ known breaches.
search Check my email now — it's freeNo signup required · Results in under 5 seconds · Your data is never stored