Well, nobody actually knows, but it's mroe likely that they have their own private system. Linnux wont crash easily, but it's not hack-proof. (from what I've seen on world-wide gaming forums, in the Runescape sections, Linnux is the piece of lying cabbage that they ply to unsuspecting people, saying that only super intelligent hackers can hack it and omg I am one of those give me your stuff please.) My very own mother works for a software programming company which designs operating systems taylored to the needs of the companies using them. I.E. They're currently working on an operating system to help oil companies streamline the shipping process. I think it's BP specifically that hired them. But they've done some stuff for PC games before. Runescape wouldn't use Linnux and Firefox. They very likely have their own system that they run on, and then upload information to a private server. Saying that Jagex staff uses Linnux is like saying porn websites use Imageshack to upload a million illicit pictures a day. But like I said at the beginning .. who really knows? If my hunch is correct, than nobody short of a techno genius could hack into the password bank. Just be careful with your PIN and your recoveries and you're perfectly safe. *Very sorry, didn't realize I double posted.