Personally, I think they can do it if you go to private channels with bots. I also think they if u use d2 loader, map hack, or any other thing they can do it. Open b.net also seems fishy to me but these are my opinions. If you visit certain websites they can sniff out your pass to. I remember I went to this one web page when I had diablo minimized. Once on the page diablo came back up by its self, joined a game, and moved the cursor taking all my items and dropping them on the ground while someone else in the game was picking them up, and when it was done it exited the game. This all happened in about 30 seconds.
i have been playin diablo 2 lod since it came out on bnet i dont and have not run any hacks and i have never been hacked, i have heard that some map hacks through in a key logger when you log on to battle net becuase map hack is a sep prog that you run in backround. Personally i think it makes sense maybe just me though
If I were to recommend a hacking tool it would be hero editor .96 for version 1.11b (I a, an xhacker im not proud of it and i will never do it again but I do know alot about hacking so if u have any more Q's talk to me)