Cheating in online games is a fairly significant problem, and there is a new way to do it in Korea. I found this very interesting.
People can buy (or build) “dongles” that attach to their mouse port that contain important macro behaviors to kill monsters automatically, retreat, heal, loot, etc. There are people that just plug this dongle into their computer everyday before they go to work. It’s very hard for the MMP operator to detect because the USB dongle appears to act rather similar to a mouse because the software actually analyzes the video signal and makes “fuzzy” choices.