The real way to decrease Internet crime is to make it harder for the bad guys to get away with malicious hacking. Once the bad guys realize that they're likely to get caught -- and those who get away with it don't make much money -- Internet crime will decrease.
We have to embed pervasive identity into the infrastructure of the Internet. Nothing else will work. Although we haven't done a good job at fixing the biggest problems of Internet security over the last decade, I'm optimistic that we will when the right challenge presents itself. IoT might be the challenge we need to, at long last, get computer security right.