It is primarily used for Credential Stuffing . Attackers use automated bots to "stuff" these combinations into the login pages of popular sites (like Netflix, Spotify, or banking portals) to see if the victim reused the same password.
Use a reputable service like Have I Been Pwned to see if your email address has appeared in known public breaches. 90K MIX COMBO VIP_COMBO_0.txt
If you suspect your information may be included in this or similar leaks: It is primarily used for Credential Stuffing
Based on current security data, is a known "combo list" —a collection of roughly 90,000 compromised username/email and password pairs used by bad actors for cyberattacks. Nature of the File If you suspect your information may be included
Once an attacker logs in, they often change the recovery email and phone number, locking the original owner out.