First of all, CIG will never be able to prevent that coder are taking part of their project for attempting whatever kind of hacking.
As long as it doesn't harm the project Star Citizien itself - as in this case - it can only be in CIG's interest. This will give them more attention, which is likely to be very high in the case of the Idris. And I even go so far as to say that even the Star Marine Hacks should not necessarily be negative, but rather the opposite. In this way CIG learns to recognize and close security gaps in its concept.
As for the case of "unknown44" itself, I understand it as offended vanity and a kind of "see? If only you had hired me - you lose!" But anyway, it won't hurt CIG imho.