Leaked SSNs
Check whether your Social Security Number (SSN) has appeared in known data breaches.
Membership Required
SSN leak checking is a premium feature available to subscribers. Register your SSNs to monitor them for data breaches.
SSN Check Limits by Plan
Begin
5
SSNs to monitor
$3/month
Premium
15
SSNs to monitor
$15/month
Pro
70
SSNs to monitor
$27/month
Why check your SSN?
Your Social Security Number is a central piece of your financial identity. When SSNs are exposed, criminals can commit identity theft, open accounts in your name, or use the information for targeted fraud.
Checking whether your SSN appears in known breaches helps you act quickly to limit damage and protect your credit and identity.
The dangers of leaked SSNs
Fraudulent Transactions
Cybercriminals use stolen card information to make unauthorized purchases or withdraw funds.
Identity theft: Stolen SSNs make it simpler for attackers to impersonate you and access services in your name.
New-account fraud: Fraudsters can open credit cards, loans, or phone contracts using leaked SSNs.
Tax and benefits fraud: Criminals may file fraudulent tax returns or claim government benefits.
Long-term impact: Unlike passwords, SSNs are effectively permanent; leaks have prolonged consequences.
ℹ️ How we protect your privacy
API Access
Integrate SSN breach checking into onboarding flows, KYC processes, and fraud-detection systems using privacy-preserving API endpoints. Available options typically include:
Real-time hashed lookups for live checks during user registration.
Batch uploads for large-scale screening (using secure, hashed datasets).
On-premise datasets for offline or private deployments.
View API Documentation →Partners & recommendations
Infrastructure providers for global delivery and DDoS protection.
Credit monitoring services to help you track changes to your credit reports.
Identity protection vendors for optional enrollment in recovery programs.
Access on GitHub →FAQ
Is it safe to check my SSN here? Yes — reputable services use one-way hashing and privacy-preserving comparisons. We recommend reading the privacy policy and ensuring that the service does not store full SSNs.
What format should I enter? Enter as XXX-XX-XXXX or XXXXXXXXX. The service will normalize input before processing.
Can I change my SSN if it’s leaked? Changing an SSN is rare and only granted in exceptional cases by the Social Security Administration. Instead, focus on credit freezes, fraud alerts, and monitoring.