Yourdataismore
exposedthanyou
think.
Billionsofpersonalrecordshavebeenexposedthroughdatabreaches.Understandingthescopeofthisthreatisthefirststeptowardreclaimingcontroloveryourdigitalidentity.
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Known Breaches
Tracked
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Pwned Accounts
Compromised
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Data Classes
Exposed types
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Largest Breach
Single incident
Why this
matters
Breaches are not isolated events. They compound. Attackers aggregate data from multiple sources to build complete profiles of their targets.
Cascading Exposure
When a company you trusted gets compromised, fragments of your identity scatter across the internet permanently. Your email becomes a key that unlocks a trail of exposed passwords, phone numbers, physical addresses, and sometimes financial data.
Credential Aggregation
Attackers do not need all of your information at once. A password from one breach combined with an email from another and a phone number from a third can be enough to bypass security questions, take over accounts, or commit identity fraud.
Silent & Forgotten
Many people are affected by breaches they never knew occurred, at services they may have forgotten signing up for years ago. The scale is staggering and growing - billions of records across thousands of incidents, often discovered months or years after the initial compromise.
What gets exposed
Data breaches expose different types of information depending on what the compromised service stored. Here is what is at risk.
Email Addresses
CommonPasswords
High RiskPhone Numbers
ModeratePhysical Addresses
High RiskIP Addresses
Low RiskFinancial Data
CriticalSocial Security #
CriticalUsernames
CommonHow we keep
your data safe
multyLeak uses public open-source breach data to check your email against a database of known data breaches. The request is routed through our server-side proxy so your email never touches a third-party service directly from your browser.
Your email is used solely for the lookup and is never stored, logged, or transmitted to any analytics service. There are no cookies, no tracking pixels, and no user accounts.
Zero Data Retention
We do not store, log, cache, or process your email beyond the immediate API lookup. There is no database on our end.
k-Anonymity Password Check
Your password is SHA-1 hashed entirely in your browser. Only the first five characters of that hash are sent. The full comparison happens locally - your password never leaves your device.
Server-Side Proxy
API requests route through our server so your email is never exposed to third-party services directly from your browser. Your IP stays hidden from external APIs.
Protecting yourself
Use a Password Manager
Tools like 1Password, Bitwarden, or Apple Keychain generate and store unique passwords for every service. You only need to remember one master password. This eliminates the single biggest vulnerability - password reuse.
Enable Two-Factor Authentication
Even if your password is compromised, 2FA adds a second barrier. Prefer authenticator apps or hardware keys over SMS where possible - SIM swapping attacks can bypass text-based verification.
Monitor Your Exposure
New breaches are discovered constantly. Make it a habit to check periodically. The sooner you know about compromised credentials, the faster you can change them before they are exploited.
Audit Connected Accounts
Many services are linked through OAuth or shared email addresses. A breach in one can cascade to others. Review which services have access to your accounts regularly and revoke anything unnecessary.
Ready to check your exposure?
It takes seconds. No account needed, no data stored, no tracking.