These files are usually formatted as email:password or username:password strings intended for automated testing.
Gaining access to other services (Amazon, Netflix, etc.) linked to that recovery email. 30k Combo Yahoo Uhq @BigDataCombo.txt
Sending mass phishing emails from legitimate Yahoo addresses. These files are usually formatted as email:password or
These files are primarily used in attacks. Threat actors load the list into "checkers" or "brute-force" software to see which accounts are still active and do not have multi-factor authentication enabled. Once an account is validated, it is often sold or used for: 30k Combo Yahoo Uhq @BigDataCombo.txt