17173
HIGH RISKData breach — December 2011
In late 2011, a series of data breaches in China affected up to 100 million users, including 7.5 million from the gaming site known as 17173. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains usernames, email addresses and salted MD5 password hashes and was provided with support from dehashed.com. Read more about Chinese data breaches in Have I Been Pwned.
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What happened in the 17173 data breach?
In late 2011, a series of data breaches in China affected up to 100 million users, including 7.5 million from the gaming site known as 17173. Whilst there is evidence that the data is legitimate, due to the difficulty of emphatically verifying the Chinese breach it has been flagged as "unverified". The data in the breach contains usernames, email addresses and salted MD5 password hashes and was provided with support from dehashed.com. Read more about Chinese data breaches in Have I Been Pwned.
The exposed data included 3 types of personal information. Because passwords were exposed, users who reused their password on other sites are at particular risk. Learn more about what a data breach means for you.
Quick answer — was 17173 hacked?
Yes. 17173 was breached in December 2011. The breach exposed 7,485,802 records including email addresses, passwords, usernames. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the 17173 breach so dangerous?
The 17173 breach exposed 7,485,802 records — that is 7.5M people whose personal data is now circulating on the dark web. The combination of email addresses, passwords, usernames makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your 17173 password against hundreds of other websites. If you reused your password anywhere, those accounts are now at risk. Read more about what happens to your data after a breach.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the 17173 breach?
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Usernames — used to build profiles and target you with personalised scams
Is the 17173 breach still dangerous in 2026?
Yes. Stolen data from the 17173 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 17173 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 17173 breach
Approximately 7,485,802 user records were exposed in the 17173 breach in December 2011.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your 17173 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 17173 dataset and tell you instantly whether your email was exposed and what data was taken.
Change your 17173 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 17173 breach?
The 17173 data breach affected approximately 7,485,802 users who had accounts with the service. While not the largest breach on record, it still represents a significant number of compromised accounts in our database of 970+ known breaches.
If you ever created an account with 17173 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 17173 breach
Change your 17173 password immediately
Go to 17173 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 17173 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.
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