BlogHas Your Email Been Breached? A Complete Guide
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Tutorial 6 min read Dec 10, 2025

Has Your Email Been Breached? A Complete Guide

Step-by-step instructions for checking if your credentials appear in known data breaches.

With over 24 billion records in known data breaches, there's a significant chance your email address—or your employees' emails—have been compromised. Here's how to check and what to do about it.

24B+
Breached Records
930+
Known Breaches
100+
Countries Affected

Method 1: Manual Breach Checking

There are several free breach checking websites that allow you to manually check individual email addresses. While useful for personal use, this approach doesn't scale for organizations with multiple employees.

1
Find a breach checker

Search for reputable breach checking services online.

2
Enter your email address

Type the email you want to check into the search box.

3
Review results

The service will show which breaches contain your email.

4
Take action

Change passwords for any affected accounts immediately.

Method 2: Enterprise Monitoring (Recommended for Business)

For organizations, manually checking each employee email isn't practical. Enterprise solutions like LeakLoop automate this process:

Bulk import all employee emails via CSV
Automatic daily checks against breach databases
Instant alerts when new breaches affect your employees
Risk scoring based on breach severity and data types
Compliance-ready reports for audits

What to Do If You've Been Breached

Change Passwords Immediately

Change the password for the breached service AND any other accounts using the same password.

Enable MFA

Add multi-factor authentication to all critical accounts to prevent future unauthorized access.

Monitor for Suspicious Activity

Watch for unexpected logins, password reset emails, or unusual account activity.

Use a Password Manager

Generate and store unique passwords for every account to prevent breach cascade effects.

Pro Tip
For personal use, free breach checkers can alert you when your email appears in new breaches. For businesses, LeakLoop monitors your entire workforce against 24+ billion records automatically.
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Ready to Protect Your Team?

Don't wait until a breach happens. Start monitoring your employee credentials today with LeakLoop.