People being hacked since the last Server Check.

Actually, I think somewhere upthread is someone saying he spoke at length with the owner of the hacked-items shop (trying to buy back a hacked friend's gear), and discovered he is working for a gold-selling site.
They are doing it for $, pure and simple. They steal meso and NX in order to sell them back to us for cold hard cash.
So, we know who, and we know why, but they will never tell how. They're not doing it for fun or for hacker pride, so they will not tire of it nor feel the need to brag on hacking boards. And since they make $ directly, they have no motivation to sell whatever they are using. About the only way that would happen is if they're working off a one-time stolen database, and exhaust their list of cracked passwords.

@Mibs: You are insecure. The hackings have not stopped.

If they are working off of a static list, which I somehow doubt, their best move would be to use up everything on the list, THEN sell the method. "We never said the accounts had anything left on them, just that you could get into them!". Can't expect them to not be scammers too; they'll do anything for the right price.

But again, I doubt that is the case, it would not surprise me in the least if they have a working backdoor into the internal servers...there's not much else that could explain why they are able to do so much of what they are doing. Unless there are some hilariously bad examples of coding in the game that allow you to do a ton of things client-sided, which would not surprise me either.