Ok let me help you.
Everything your character does is logged into a database lets pretend its sql and I mean EVERYTHING gold earned today, gold earned in the last week, gold earned total, games created today, avg time spent in games today all of this would be extremely EASY to log and add to a database for your character. So how do you find sarkoth botters ?
Query your database for people who spend 10-30s in a game and have over 300 games created today. Right there you just found 99.9% of the botters who do sarkoth with 1 query. Flag every account and have your team go over each one manually and ban them. They don't need to scan our PCs we give them the very data every game we play that gets us caught.