The "bigbas by mailpass.pw [1kk lines].txt" file is a dataset of approximately one million stolen email and password pairs commonly used in credential stuffing attacks. It is a compilation of data from multiple breaches, often shared on forums for malicious use.
If you believe your information is involved, it is recommended to check for exposure using services like Have I Been Pwned , immediately change any reused passwords, and enable multi-factor authentication on all sensitive accounts. bigbas by mailpass.pw [1kk lines].txt