Wow, im shocked honestly..There's only 2-3 HUGE bot farms on RuneScape. They aren't kids using common botting software and scripts. These guys run 300+ accounts at once. The easiest way to move items off their accounts quickly is to just accept any trades, scan username and trade over the goods. Probably what happened is the username scanner was bugged (could be something Jagex changed) and it allowed anyone to trade them and get what they had. I'd bet my life every account this guy traded was part of the same farm running the same software.
I’d love to know how the owner of these bots is running all of these without getting caught or getting banned

