The phrase typically refers to a combolist — a text file containing 400,000 sets of usernames and passwords (or email/password combinations) used for unauthorized account access . In the context of gaming and cybersecurity:
Files like these are often distributed in "cracking" or "leaking" forums. Using or downloading such files carries significant risks: 400K UHQ VALORANT COMBO.txt
Attempting to use these credentials violates Riot Games' Terms of Service and can lead to permanent hardware (HWID) bans. The phrase typically refers to a combolist —