It is an interesting environment. There appears to be lots of Mafiya and hacker groups using it. If the FSB wanted to go after them it would be a cake walk. But they don't ...
Keep in mind the FSB is quite busy battling an islamofascist terrorist movement in a breakaway republic and what their anti-organized crime unit is really busy with is mafiya activity that is on the streets and not on the net (i.e., contract killings, kidnappings, prostitution, money laundering, etc). The FSB has a serious recruiting problem.