Mobile authenticators (Steam Guard/Riot Mobile) make these combolists useless. A "hit" on a list means nothing if the hacker can't get past your phone's prompt.
Gaming accounts are high-value targets. A Steam account with rare CS:GO skins or a Valorant account with "unranked" status but high-tier skins can be flipped for hundreds of dollars on gray-market sites. The "Checker" Economy 762k UHQ User-Pass Gaming Combo(Steam,Valorante...
A "combo" (short for combination list) is a text file containing pairs of usernames/emails and passwords. When someone advertises they are claiming to have 762,000 "Ultra High Quality" credentials. But where do they come from? A Steam account with rare CS:GO skins or
The person posting this list likely didn't check 762,000 accounts by hand. They use (like OpenBullet or SilverBullet). These tools: Proxy-hop to avoid IP bans. Automate the login process. But where do they come from
They don't just see if the login works; they "scrape" the account for its inventory value, credit card info, and rank. Why Steam and Valorant?
Use services like Have I Been Pwned to see if your email has appeared in any recent UHQ dumps.