maybe managing catch?
It is a crime. Who says it is not a crime? The problem is to how to catch those thieves.
This problem isn't solved?
how they can solve the criminal problem? it's not even related to bitcoin, cash and fiat were always a big portion of it, helping terrorist
Actually, now that you mention cash,
I must say that cash is probably a better tool for terrorists and criminals.
Bitcoin transactions can be traced.
Cash cannot be traced.
That's only true for small amounts of cash. Since most terrorists are international, they have to be concerned about moving large amounts of cash across borders. The only way to do that is to smuggle it. Otherwise there is a big obvious paper trail. With Bitcoin, there is still a trail, but you have to look for it. It doesn't raise red flags like the movement of cash does.