I know full well that greed will drive the stupid to do stupid things... But they'll pay the price. And worst of all, I won't be able to snag the dark they throw away and add their blood to my hot tub... It'll just fuck DRK directly. And THAT, sir, is what I find to be offensive. :-p
Actually, it seems like there is probably a good service opportunity here for White Hat hacker to penetration test all of the Masternodes and ask for payment if flaws are found.
On that note, it could be that this attacker was a white hat. This actually happened with Counterparty about a month ago. Someone found a flaw, exploited it, stole some coins and then returned them once the flaw was fixed.