Kayo.moe Credential Stuffing List
HIGH RISKData breach — September 2018
In September 2018, a collection of almost 42 million email address and plain text password pairs was uploaded to the anonymous file sharing service kayo.moe. The operator of the service contacted HIBP to report the data which, upon further investigation, turned out to be a large credential stuffing list. For more information, read about The 42M Record kayo.moe Credential Stuffing Data.
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What happened in the Kayo.moe Credential Stuffing List data breach?
In September 2018, a collection of almost 42 million email address and plain text password pairs was uploaded to the anonymous file sharing service kayo.moe. The operator of the service contacted HIBP to report the data which, upon further investigation, turned out to be a large credential stuffing list. For more information, read about The 42M Record kayo.moe Credential Stuffing Data.
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 Kayo.moe Credential Stuffing List hacked?
Yes. Kayo.moe Credential Stuffing List was breached in September 2018. The breach exposed 41,826,763 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 Kayo.moe Credential Stuffing List breach so dangerous?
The Kayo.moe Credential Stuffing List breach exposed 41,826,763 records — that is 41.8M 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 Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing List breach still dangerous in 2026?
Yes. Stolen data from the Kayo.moe Credential Stuffing 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 2018 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 Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing List breach
Approximately 41,826,763 user records were exposed in the Kayo.moe Credential Stuffing List breach in September 2018.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing List dataset and tell you instantly whether your email was exposed and what data was taken.
Change your Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing List breach?
The Kayo.moe Credential Stuffing List data breach affected approximately 41,826,763 users who had accounts with the service. With 41.8M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing List breach
Change your Kayo.moe Credential Stuffing List password immediately
Go to Kayo.moe Credential Stuffing 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 Kayo.moe Credential Stuffing 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
Run a full email check to see every breach your email appears in — not just this one.
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