Re: Crack teams
I think what he was getting at as I'm sure everyone knows is that if you are going to hack you need to hop through compromised systems that don't keep logs. The randomisation is by switching compromised systems so your IP doesn't stay the same for long allowing whoever is looking to trace your packets back to you. The reasons Russia always get fingered in these things is that it is politically useful and if you are going to hack you would want to take your hack via a country that the other country doesn't have access to the backbone.
It is for these reasons unless you catch someone in the act at a computer you can never say who it is.