Using leaked credentials violates MEGA's Terms of Service and may involve legal issues related to unauthorized access to computer systems. How to Secure Your Own MEGA Account
Check your active sessions in the MEGA settings to ensure only your devices are logged in. Login - MEGA
Use a strong, unique password specifically for MEGA.
Files like this often circulate in communities that share "premium" account access for free. However, downloading or using these accounts can lead to severe security risks and account termination. Risks of Engaging with Such Files
If you are concerned that your credentials might be in such a list, you should take the following steps:
These lists are frequently used in automated "stuffing" attacks, where hackers test stolen username/password pairs across multiple sites to find working logins.