: Change your password for your Hotmail/Outlook account and any other site where you use the same credentials.
: Use Have I Been Pwned to see if your email address has appeared in any known data breaches. 1M HOTMAIL.txt
: The .txt format is used because it is lightweight, easy to share on underground forums, and can be read by simple scripts without special formatting. : Change your password for your Hotmail/Outlook account
: Typically, each line follows a username:password format. Recommended Security Actions easy to share on underground forums
: Add an extra layer of security to your account so that even if a hacker has your password, they cannot gain access.
Text File Format - What Is A .TXT And How to Open It - Adobe