I met a hacker earlier. His name was Noobilla. It sucked, mainly cause we went on a quest, and as soon as I walked out of camp, he blew me up with a large barrel bomb, instantly making me faint. then he ran and killed the Great Jaggi in one hit. I thought he abandoned the quest, until the reward screen.
I hate hackers. Luckily He's the only one I've ever run into.