National Public Data
MEDIUM RISKData breach — April 2024
In April 2024, a large trove of data made headlines as having exposed "3 billion people" due to a breach of the National Public Data background check service. The initial corpus of data released in the breach contained billions of rows of personal information, including US social security numbers. Further partial data sets were later released including extensive personal information and 134M unique email addresses, although the origin and accuracy of the data remains in question. This breach has been flagged as "unverified" and a full description of the incident is in the link above.
search Check if you were affected — freeData exposed in this breach
What happened in the National Public Data data breach?
In April 2024, a large trove of data made headlines as having exposed "3 billion people" due to a breach of the National Public Data background check service. The initial corpus of data released in the breach contained billions of rows of personal information, including US social security numbers. Further partial data sets were later released including extensive personal information and 134M unique email addresses, although the origin and accuracy of the data remains in question. This breach has been flagged as "unverified" and a full description of the incident is in the link above.
The exposed data included 7 types of personal information. Learn more about what a data breach means for you.
Quick answer — was National Public Data hacked?
Yes. National Public Data was breached in April 2024. The breach exposed 133,957,569 records including dates of birth, email addresses, genders. If your email was involved, your data may still be at risk today. Check if you were affected.
Why was the National Public Data breach so dangerous?
The National Public Data breach exposed 133,957,569 records — that is 134.0M people whose personal data is now circulating on the dark web. The combination of dates of birth, email addresses, genders makes this a medium-risk breach that should be addressed promptly.
Don't wait to find out — check if your email was exposed in this breach now.
What data was stolen in the National Public Data breach?
Dates of birth — used to verify identity for account takeover and fraud
Email addresses — used for phishing attacks and credential stuffing against your other accounts
Genders — may be combined with other breach data to build a profile for targeted attacks
Government issued IDs — enables full identity theft including fraudulent credit applications
Names — used to build profiles and target you with personalised scams
Phone numbers — enables SIM swapping attacks and targeted SMS phishing scams
Physical addresses — combined with other data, used for identity theft and physical fraud
Is the National Public Data breach still dangerous in 2026?
Yes. Stolen data from the National Public 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 2024 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 National Public 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 National Public Data breach
Approximately 133,957,569 user records were exposed in the National Public Data breach in April 2024.
Yes. Leaked credentials are actively used in credential stuffing attacks years after a breach. If you reused your National Public Data 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 National Public Data dataset and tell you instantly whether your email was exposed and what data was taken.
Change your National Public 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 National Public Data breach?
The National Public Data data breach affected approximately 133,957,569 users who had accounts with the service. With 134.0M records exposed, this is one of the larger breaches tracked in our database of 970+ known breaches.
If you ever created an account with National Public 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 National Public Data breach
Change your National Public Data password immediately
Go to National Public 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 National Public Data 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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