RedLine Stealer
HIGH RISKData breach — December 2021
In December 2021, logs from the RedLine Stealer malware were left publicly exposed and were then obtained by security researcher Bob Diachenko. The data included 441 thousand unique email addresses, usernames and plain text passwords.
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What happened in the RedLine Stealer data breach?
In December 2021, logs from the RedLine Stealer malware were left publicly exposed and were then obtained by security researcher Bob Diachenko. The data included 441 thousand unique email addresses, usernames and plain text passwords.
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 RedLine Stealer hacked?
Yes. RedLine Stealer was breached in December 2021. The breach exposed 441,657 records including email addresses, passwords, usernames. 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 RedLine Stealer breach so dangerous?
The RedLine Stealer breach exposed 441,657 records — that is a large number of compromised accounts. 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 RedLine Stealer 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 RedLine Stealer 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 RedLine Stealer breach still dangerous in 2026?
Yes. Stolen data from the RedLine Stealer 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 2021 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 RedLine Stealer 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 RedLine Stealer breach
Approximately 441,657 user records were exposed in the RedLine Stealer breach in December 2021.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your RedLine Stealer 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 RedLine Stealer dataset and tell you instantly whether your email was exposed and what data was taken.
Change your RedLine Stealer 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 RedLine Stealer breach?
The RedLine Stealer data breach affected approximately 441,657 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 RedLine Stealer 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 RedLine Stealer breach
Change your RedLine Stealer password immediately
Go to RedLine Stealer 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 RedLine Stealer 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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