However seems like they managed to hack the manager of this project aswell (even his BTCtalk account ) xPooky https://bitcointalksearch.org/topic/ann-cryptospot-the-first-bitcoin-virtual-mining-game-945211 and he is trying to recover it and this is his new account https://bitcointalksearch.org/user/bitemebulgariancyberarmy-542915
Also I think his post should make you comfortable either it's big or small amount you have invested : https://bitcointalksearch.org/topic/m.12077964
Maybe they test random websites for a certain vulnerability? Like porttesting, only on different domains. And this setup had the vulnerability. Easy way to spread the word, or the fame of these hackers i guess.