MyHeritage
HIGH RISKData breach — October 2017
In October 2017, the genealogy website MyHeritage suffered a data breach. The incident was reported 7 months later after a security researcher discovered the data and contacted MyHeritage. In total, more than 92M customer records were exposed and included email addresses and salted SHA-1 password hashes. In 2019, the data appeared listed for sale on a dark web marketplace (along with several other large breaches) and subsequently began circulating more broadly.
search Check if you were affected — freeData exposed in this breach
What happened in the MyHeritage data breach?
In October 2017, the genealogy website MyHeritage suffered a data breach. The incident was reported 7 months later after a security researcher discovered the data and contacted MyHeritage. In total, more than 92M customer records were exposed and included email addresses and salted SHA-1 password hashes. In 2019, the data appeared listed for sale on a dark web marketplace (along with several other large breaches) and subsequently began circulating more broadly.
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 MyHeritage hacked?
Yes. MyHeritage was breached in October 2017. The breach exposed 91,991,358 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 MyHeritage breach so dangerous?
The MyHeritage breach exposed 91,991,358 records — that is 92.0M 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 MyHeritage 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 MyHeritage 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 MyHeritage breach still dangerous in 2026?
Yes. Stolen data from the MyHeritage 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 MyHeritage 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 MyHeritage breach
Approximately 91,991,358 user records were exposed in the MyHeritage breach in October 2017.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your MyHeritage 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 MyHeritage dataset and tell you instantly whether your email was exposed and what data was taken.
Change your MyHeritage 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 MyHeritage breach?
The MyHeritage data breach affected approximately 91,991,358 users who had accounts with the service. With 92.0M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with MyHeritage 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 MyHeritage breach
Change your MyHeritage password immediately
Go to MyHeritage 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 MyHeritage 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.
searchCheck all my breaches — freeOther major breaches
Was my email hacked?
Check if your email is compromised in seconds. Free, private, no signup. Scan 12 billion+ records across 970+ known breaches.
search Check my email now — it's freeNo signup required · Results in under 5 seconds · Your data is never stored