OSINT (Open Source Intelligence) refers to collecting information from publicly available sources to identify risks, solve problems, or enhance security. One critical use of OSINT is uncovering data leaks—instances where sensitive information like emails, passwords, or financial details is accidentally exposed. Whether you’re safeguarding your personal data or conducting ethical research, these free tools can help you detect leaks before they’re exploited.

HaveIBeenPwned is a free, trusted tool created by cybersecurity expert Troy Hunt. It scans billions of breached records to see if your accounts were exposed.

How to Use It:

1. Visit the website and enter your email address or phone number.
2. Click Check.
3. Review Results:

• If your data appears in a breach, you’ll see which incidents affected you (e.g., the LinkedIn 2012 breach).