Anti Public Combo List
HIGH RISKData breach — December 2016
In December 2016, a huge list of email address and password pairs appeared in a "combo list" referred to as "Anti Public". The list contained 458 million unique email addresses, many with multiple different passwords hacked from various online systems. The list was broadly circulated and used for "credential stuffing", that is attackers employ it in an attempt to identify other online systems where the account owner had reused their password. For detailed background on this incident, read Password reuse, credential stuffing and another billion records in Have I Been Pwned.
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What happened in the Anti Public Combo List data breach?
In December 2016, a huge list of email address and password pairs appeared in a "combo list" referred to as "Anti Public". The list contained 458 million unique email addresses, many with multiple different passwords hacked from various online systems. The list was broadly circulated and used for "credential stuffing", that is attackers employ it in an attempt to identify other online systems where the account owner had reused their password. For detailed background on this incident, read Password reuse, credential stuffing and another billion records in Have I Been Pwned.
The exposed data included 2 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 Anti Public Combo List hacked?
Yes. Anti Public Combo List was breached in December 2016. The breach exposed 457,962,538 records including email addresses, passwords. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the Anti Public Combo List breach so dangerous?
The Anti Public Combo List breach exposed 457,962,538 records — that is 458.0M people whose personal data is now circulating on the dark web. The combination of email addresses, passwords makes this a high-risk breach that requires immediate action.
Because passwords were exposed, attackers can use credential stuffing to automatically test your Anti Public Combo List 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 Anti Public Combo List 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
Is the Anti Public Combo List breach still dangerous in 2026?
Yes. Stolen data from the Anti Public Combo List 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 2016 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 Anti Public Combo List 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 Anti Public Combo List breach
Approximately 457,962,538 user records were exposed in the Anti Public Combo List breach in December 2016.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Anti Public Combo List 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 Anti Public Combo List dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Anti Public Combo List 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 Anti Public Combo List breach?
The Anti Public Combo List data breach affected approximately 457,962,538 users who had accounts with the service. With 458.0M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Anti Public Combo List 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 Anti Public Combo List breach
Change your Anti Public Combo List password immediately
Go to Anti Public Combo List 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 Anti Public Combo List 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
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