http://www.techradar.com/news/online-game-from-playerunknowns-battlegrounds-dev-let-players-send-malware-via-in-game-chat

Here’s something new (and very worrying) in the world of online gaming: Tera, an MMORPG (massively multiplayer online RPG) produced by the same developer responsible for PlayerUnknown's Battlegrounds, had its in-game chat shut down over the weekend following revelations that it could be used as a medium to spread all sorts of malicious nastiness including viruses.

Developer Bluehole launched Tera back in 2011 in South Korea, and it followed to North America and Europe in 2012. It’s an online RPG with combat that plays out like an FPS, but panic struck over the weekend when the game servers were brought down for emergency maintenance to fix a gaping chat-related vulnerability.