Use services like Have I Been Pwned to see if your email address has appeared in any known combolists.
A "120k combolist.txt" refers to a text file containing 120,000 combinations of usernames or emails and their associated passwords, typically formatted as user:password . What is a Combolist? 120 k combolist.txt
If you use the same password for your email and your social media, a leak from one service allows access to the other. Use services like Have I Been Pwned to
Bots can test thousands of these credentials per minute, making manual password protection insufficient. 120 k combolist.txt
Generate unique, complex passwords for every account so that one leak doesn't compromise your entire digital life.