Yam
HIGH RISKData breach — June 2013
In June 2013, the Taiwanese website Yam.com suffered a data breach which was shared to a popular hacking forum in 2021. The data included 13 million unique email addresses alongside names, usernames, phone numbers, physical addresses, dates of birth and unsalted MD5 password hashes.
search Check if you were affected — freeData exposed in this breach
What happened in the Yam data breach?
In June 2013, the Taiwanese website Yam.com suffered a data breach which was shared to a popular hacking forum in 2021. The data included 13 million unique email addresses alongside names, usernames, phone numbers, physical addresses, dates of birth and unsalted MD5 password hashes.
The exposed data included 7 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 Yam hacked?
Yes. Yam was breached in June 2013. The breach exposed 13,258,797 records including dates of birth, email addresses, names. 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 Yam breach so dangerous?
The Yam breach exposed 13,258,797 records — that is 13.3M people whose personal data is now circulating on the dark web. The combination of dates of birth, email addresses, names makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your Yam 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 Yam breach?
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Names — used to build profiles and target you with personalised scams
Passwords — can be used to access your accounts directly or cracked to reveal your actual password
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Usernames — used to build profiles and target you with personalised scams
Is the Yam breach still dangerous in 2026?
Yes. Stolen data from the Yam 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 2013 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 Yam 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 Yam breach
Approximately 13,258,797 user records were exposed in the Yam breach in June 2013.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Yam 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 Yam dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Yam 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 Yam breach?
The Yam data breach affected approximately 13,258,797 users who had accounts with the service. With 13.3M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Yam 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 Yam breach
Change your Yam password immediately
Go to Yam 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 Yam 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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