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?
If you use the same password for your email and your social media, a leak from one service allows access to the other. 120 k combolist.txt
Possessing or distributing these lists is often illegal and is a primary tool for identity theft and unauthorized access. How to Protect Yourself A "120k combolist