This often implies that the list is "HQ" (high quality), meaning it has been cleaned of duplicates, contains active accounts, or includes additional data like capture info (e.g., account balance, subscription status). Security Implications
Use services like Have I Been Pwned to see if your email address has appeared in known data leaks. 107K Combo Private.txt
This suggests the list has not been widely leaked or shared publicly yet, making it more "valuable" for automated login attempts as the accounts may not have been secured yet. This often implies that the list is "HQ"
If you reuse passwords across multiple sites, change them to unique, complex passwords for each service. contains active accounts