Find out if your data has been exposed
Enter an email address to securely check it against our **simulated** database of public data breaches.
This is a demonstration tool.
For a real check, please use an authoritative service like haveibeenpwned.com.
How Strong Is Your Password?
Enter a password to analyze its strength. Nothing you type is stored or sent anywhere.
- At least 12 characters
- Contains a lowercase letter (a-z)
- Contains an uppercase letter (A-Z)
- Contains a number (0-9)
- Contains a special character (!@#$...)
Why Data Breaches Matter
In our digital world, we entrust hundreds of services with our personal information—email addresses, passwords, phone numbers, and more. A **data breach** occurs when this sensitive information is stolen from a company's database by unauthorized individuals.
The Ripple Effect of a Single Breach
You might think a breach at one service isn't a big deal, but criminals are strategic. They know that many people reuse the same email and password across multiple websites. This is called **credential stuffing**.
- They take the leaked email/password from Website A.
- They use automated software to try that same combination on hundreds of other popular sites (your bank, social media, email account).
- If you've reused your password, they gain instant access to your other, more valuable accounts.
What You Can Do About It
You have the power to protect yourself. Being proactive is key:
- Use Unique Passwords: Every important account should have its own strong, unique password. A password manager can help you create and store them securely.
- Enable Two-Factor Authentication (2FA): This adds a crucial second layer of security, requiring a code from your phone to log in. Even if a criminal has your password, they can't get in without your device.
- Stay Informed: Use tools like BreachGuard to know when your information has been exposed, so you can act quickly to change your passwords and secure your accounts.
About BreachGuard
BreachGuard is an educational, client-side cybersecurity tool designed to help you understand and improve your online safety without compromising your privacy.
Our Commitment to Privacy
We believe security tools should be secure themselves. That's why BreachGuard operates **entirely within your web browser**.
- Nothing is stored: The email addresses or passwords you enter are never saved, logged, or stored in any way.
- Nothing is transmitted: Your data is not sent to our servers or any third party. All checks are performed locally on your device against a pre-defined, simulated list for demonstration purposes.
- Open and Transparent: The complete source code for this tool is visible to you. You can right-click and "View Page Source" to see exactly how it works.
Our goal is to provide a safe environment where you can learn about digital security risks and test out best practices. For real-world breach notifications, we strongly recommend using established and trusted services.
Privacy Policy
Last Updated: August 5, 2025
BreachGuard ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains our principles and practices. Your use of our website and tools constitutes your agreement to this policy.
1. No Data Collection
We do not collect, store, log, or share any personal information you enter into our tools. This includes, but is not limited to:
- Email addresses entered into the breach checker.
- Passwords entered into the strength checker.
- Your IP address or browser information.
2. Client-Side Operation
All functionality of the BreachGuard website operates entirely on your computer, within your web browser (this is "client-side"). No information is ever transmitted to our servers or any third-party service. The breach and password checks are performed against a simulated database contained within the page's code.
3. Cookies and Trackers
We do not use cookies, tracking pixels, or any other analytics or advertising technologies. Your session is completely anonymous.
4. Changes to This Policy
We may update this Privacy Policy in the future. Any changes will be posted on this page with an updated revision date. We encourage you to review this policy periodically.
Terms of Service
Last Updated: August 5, 2025
By accessing and using the BreachGuard website (the "Service"), you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these Terms, do not use the Service.
1. Use of Service
The Service is provided for educational and informational purposes only. It is a simulation designed to help users understand cybersecurity concepts. It is not intended to be a substitute for professional security advice or services.
2. Disclaimer of Warranty
The Service is provided "as is" and "as available" without any warranties of any kind, express or implied. We do not warrant that the Service will be error-free, that its results will be accurate or reliable, or that it will meet your requirements.
3. Limitation of Liability
In no event shall BreachGuard or its creators be liable for any direct, indirect, incidental, special, or consequential damages arising out of or in connection with your use of, or inability to use, the Service.
4. Prohibited Conduct
You agree not to use the Service for any unlawful purpose or to engage in any activity that could damage, disable, or impair the Service. Attempting to reverse-engineer or interfere with the client-side code is prohibited.