Onliner Spambot
HIGH RISKData breach — August 2017
In August 2017, a spambot by the name of Onliner Spambot was identified by security researcher Benkow moʞuƎq. The malicious software contained a server-based component located on an IP address in the Netherlands which exposed a large number of files containing personal information. In total, there were 711 million unique email addresses, many of which were also accompanied by corresponding passwords. A full write-up on what data was found is in the blog post titled Inside the Massive 711 Million Record Onliner Spambot Dump.
search Check if you were affected — freeData exposed in this breach
What happened in the Onliner Spambot data breach?
In August 2017, a spambot by the name of Onliner Spambot was identified by security researcher Benkow moʞuƎq. The malicious software contained a server-based component located on an IP address in the Netherlands which exposed a large number of files containing personal information. In total, there were 711 million unique email addresses, many of which were also accompanied by corresponding passwords. A full write-up on what data was found is in the blog post titled Inside the Massive 711 Million Record Onliner Spambot Dump.
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 Onliner Spambot hacked?
Yes. Onliner Spambot was breached in August 2017. The breach exposed 711,477,622 records including email addresses, passwords. 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 Onliner Spambot breach so dangerous?
The Onliner Spambot breach exposed 711,477,622 records — that is 711.5M 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 Onliner Spambot 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 Onliner Spambot 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 Onliner Spambot breach still dangerous in 2026?
Yes. Stolen data from the Onliner Spambot 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 2017 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 Onliner Spambot 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 Onliner Spambot breach
Approximately 711,477,622 user records were exposed in the Onliner Spambot breach in August 2017.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Onliner Spambot 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 Onliner Spambot dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Onliner Spambot 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 Onliner Spambot breach?
The Onliner Spambot data breach affected approximately 711,477,622 users who had accounts with the service. With 711.5M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Onliner Spambot 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 Onliner Spambot breach
Change your Onliner Spambot password immediately
Go to Onliner Spambot 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 Onliner Spambot 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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