The "4k LOL & VALO Combo List By REDOX ADMIN.txt" is a file containing roughly 4,000 sets of compromised usernames and passwords targeting League of Legends and Valorant users, likely compiled from data breaches and infostealer malware. These lists are used for credential stuffing to take over accounts. To protect against such threats, it is advised to enable multi-factor authentication and use a password manager for unique passwords. Learn more about password combo lists at Group-IB .