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Synthient Stealer Log Threat Data

HIGH RISK

Data breach — April 2025

During 2025, Synthient aggregated billions of records of "threat data" from various internet sources. The data contained 183M unique email addresses alongside the websites they were entered into and the passwords used. After normalising and deduplicating the data, 183 million unique email addresses remained, each linked to the website where the credentials were captured, and the password used. This dataset is now searchable in HIBP by email address, password, domain, and the site on which the credentials were entered.

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183.0M

Records exposed

2025

Year of breach

Data types exposed

Free

To check your email

Data exposed in this breach

mailEmail addresses lockPasswords

What happened in the Synthient Stealer Log Threat Data data breach?

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 Synthient Stealer Log Threat Data hacked?

Yes. Synthient Stealer Log Threat Data was breached in April 2025. The breach exposed 182,962,095 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 Synthient Stealer Log Threat Data breach so dangerous?

The Synthient Stealer Log Threat Data breach exposed 182,962,095 records — that is 183.0M 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 Synthient Stealer Log Threat Data 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 Synthient Stealer Log Threat Data breach?

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Email addresses — used for phishing attacks and credential stuffing against your other accounts

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Passwords — can be used to access your accounts directly or cracked to reveal your actual password

Is the Synthient Stealer Log Threat Data breach still dangerous in 2026?

Yes. Stolen data from the Synthient Stealer Log Threat Data 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 2025 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 Synthient Stealer Log Threat Data 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 Synthient Stealer Log Threat Data breach

How many people were affected by the Synthient Stealer Log Threat Data data breach? expand_more

Approximately 182,962,095 user records were exposed in the Synthient Stealer Log Threat Data breach in April 2025.

Is the Synthient Stealer Log Threat Data breach still a risk in 2026? expand_more

Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your Synthient Stealer Log Threat Data password elsewhere and haven't changed it, those accounts remain at risk today.

How do I know if my email was in the Synthient Stealer Log Threat Data breach? expand_more

Enter your email in the free checker on EmailLeaked. We scan 12 billion+ breach records including the full Synthient Stealer Log Threat Data dataset and tell you instantly whether your email was exposed and what data was taken.

What should I do if I was in the Synthient Stealer Log Threat Data breach? expand_more

Change your Synthient Stealer Log Threat Data 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 Synthient Stealer Log Threat Data breach?

The Synthient Stealer Log Threat Data data breach affected approximately 182,962,095 users who had accounts with the service. With 183.0M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.

If you ever created an account with Synthient Stealer Log Threat Data 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 Synthient Stealer Log Threat Data breach

Change your Synthient Stealer Log Threat Data password immediately

Go to Synthient Stealer Log Threat Data 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 Synthient Stealer Log Threat Data and every important account. Even if your password is known, attackers cannot get in without the second factor.