These lists are usually the result of large-scale data breaches from various companies and services. How to protect yourself:
Use the Have I Been Pwned website to see if your email address has appeared in a known data breach. 15K EUROPE COMBOLIST GOOD FOR ALL.txt
These lists are often used by cybercriminals for attacks, where automated tools try the stolen credentials on multiple websites—like social media, banks, or streaming services—to see where they work. Why this is a serious security risk: These lists are usually the result of large-scale