Instant scan of 17+ billion breached records — find out if your email, passwords, or personal data have been exposed.
Your email is sent to breach databases (XposedOrNot, LeakCheck, EmailRep) via a CORS proxy. It is not stored by my server.
Known Data Breaches
Confirmed incidents tracked by Have I Been Pwned — search to check if a specific service you use was breached.
Loading breach database stats…
Loading breach data…
What Is a Data Breach?
A data breach occurs when an unauthorized party gains access to a system and extracts user records. Breaches can be caused by hacking, misconfigured databases, insider theft, or exposed cloud storage. Once stolen, data is often sold on dark web markets or published publicly.
Why does it matter if my email appeared?
Even if your current password is strong, old passwords from a breach may be reused elsewhere. Attackers use credential stuffing — automatically trying stolen email/password combinations across hundreds of services. A single breach can cascade into account takeovers across your entire digital life.
What Data Gets Stolen?
Data Type
Risk Level
Why It Matters
Passwords
Critical
Enables direct account takeover via credential stuffing
Email addresses
High
Enables targeted phishing, spam, and account enumeration — including IRS impersonation scams during tax season
Phone numbers
High
SIM swap attacks, SMS phishing (smishing)
Names & addresses
Medium
Identity fraud, social engineering, physical targeting
Dates of birth
Medium
Identity verification bypass, combined with other data
Security questions
High
Account recovery bypass if questions are shared across services
IP addresses
Low
Reveals approximate location at time of registration
Activate 2FA on the affected account and on email, banking, and social media accounts.
3
Check for Suspicious Activity
Review login history, connected apps, and sent messages. Also watch for "password reset" emails you didn't request — that's a sign someone is actively trying to get in.
4
Use a Unique Password for Every Service
A password manager (Bitwarden, 1Password, Proton Pass) makes this practical at no extra effort.
5
Recheck Periodically
Breaches are often disclosed months or years after they happen. Run this check every few months.
6
Consider a Credit Freeze (US Users)
If financial or personal data was exposed, freeze your credit at Equifax, Experian, and TransUnion.
7
Consider Identity Theft Protection (US Users)
If your SSN or financial data was exposed, consider enrolling in an identity theft monitoring service (LifeLock, Aura, or free options via your bank or credit card).
Your Email on Data Broker Sites
Beyond breach databases, your email address may appear on commercial data broker sites — companies that aggregate and sell personal information. Unlike GDPR in Europe, the US has no federal law requiring brokers to delete your data on request.
California (CCPA/CPRA) and Virginia (VCDPA) give residents the right to opt out and request deletion. For everyone else, removal must be done manually, broker by broker.
Since 2017, US ISPs are legally permitted to sell customer browsing data without explicit consent. Combined with email breaches, this means your online behavior can be linked to your real identity and sold to third parties. A VPN encrypts your traffic and prevents ISP-level tracking.
The Verdict: Staying Safe After a Breach
Assume your email is already in at least one breach. With over 15 billion accounts exposed across thousands of incidents, it is statistically likely. The goal is not to prevent exposure — it is to limit the damage when it happens.
Unique passwords + 2FA are the two most effective defenses. Even if one service is breached, attackers cannot reuse your credentials elsewhere, and 2FA blocks most automated account takeover attempts.
For maximum privacy: Use an email alias service (SimpleLogin, AnonAddy) to give each service a different email address. A breach then only exposes one alias, not your real email — which protects you from spam, phishing, and cross-service tracking.
A data breach occurs when an attacker gains unauthorized access to a company's database and extracts user records — typically including email addresses, passwords, names, phone numbers, and sometimes payment information. These records are then sold on dark web markets or released publicly. Major breaches from companies like LinkedIn, Adobe, Yahoo, and Equifax have exposed billions of accounts.
How do I know if my email was in a data breach?
Enter your email address in the checker above. It searches breach databases including Have I Been Pwned — the largest public breach database with 14+ billion records. If your email appears in any known breach, you'll see which breach it was exposed in and what data was compromised. Note: absence of results doesn't guarantee your email has never been exposed, as not all breaches are publicly disclosed.
What data gets exposed in a typical breach?
The most commonly exposed data includes email addresses, passwords (often hashed, but sometimes plaintext), usernames, names, phone numbers, dates of birth, and physical addresses. In financial breaches, credit card numbers and bank account details may also be exposed. Even if "only" your email was leaked, it can be used for targeted phishing attacks and credential stuffing against other accounts.
My email was found in a breach — what should I do?
Don't panic, but act quickly. Change your password on the breached site and anywhere else you reused it — use a password manager (like Bitwarden or 1Password) to ensure every account gets a unique, complex password going forward. Enable Two-Factor Authentication (2FA) immediately — it's your best defense against account takeovers. Finally, watch out for phishing emails that use your leaked info to trick you into clicking malicious links. Also check if your passwords were directly compromised. If financial data was exposed, consider placing a fraud alert with the major credit bureaus.
What if my phone number was leaked?
Leaked phone numbers lead to a surge in "smishing" (SMS phishing) and scam calls. Be extremely cautious of text messages with links or urgent requests, even if they seem to come from a bank, shipping company, or government agency — these are classic smishing tactics. Never click links in unexpected SMS messages, even if the sender looks familiar. If you receive suspicious texts, report them to your carrier by forwarding to 7726 (SPAM).
Is my email address stored or shared when I check it here?
No. I do not store your email address or share it with third parties. The check is performed via encrypted API calls to breach databases. No sign-up or account is required — the process is completely anonymous. No personal data is retained after your session ends.
