A plain text file containing over 1,800 Minecraft account usernames and passwords has just been leaked online. The details available in the leak has been posted to Pastebin, which would allow anyone to log into a legitimate user’s account in order to play online and download the full version of the game to their own computers. The more serious implication of the leaked credentials would be for those affected users who had used the same username and password combination for other online services, like shopping site, banking site, email service or social networking site. Microsoft’s Xbox Live gaming service has regularly been a target for hackers.
Source: https://thehackernews.com/2015/01/minecraft-game-hacked.html