: Automated bots "stuff" these logins into login pages of different services.

: These lists are often traded or sold on hacking forums or Telegram channels.

These files are generally associated with , where hackers use automated tools to test these leaked credentials across various websites (like social media, banking, or streaming services) to see if they work elsewhere due to password reuse. Why the Name? "Combo" : Short for a combination of credentials.

: Update passwords for any accounts that shared the same credentials, prioritizing your primary email and banking accounts.