The thing is that , nobody reports players of botting in D3 , probably cause its bots botting bots

In World of Warcraft , you can clearly see people who bot - they follow the same path , cast the exact same spell. Its very simple , right click and report player for botting and voila

Since D3 can be played as Single Player , it would be very hard to catch botters. Bot program makers try their best to bypass any sort of authentication. Finding new ways to inject into the code. You ever wondered why bot programs requires admin rights ? Well its simple , Blizzard has anti-cheat software that scans memory , now probably your D3 is not being run as admin , so it can't check for other segments. The bot program runs as admin meaning it can see memory contents of other programs and alter it

Bad thing , now if the bot software is a rogue software , I can actually get content of your facebook , your online banking , etc. You may never know at all...