The only thing surprising here is that this is just showing up in 2015.

Colnago has been contending with counterfeiters for decades.

Perhaps the only difference is the massive industrial scale that this is occurring on, whereas the old fakes were usually legitimate frames that had been repainted.

How to fight this?

Bring production back to the USA and Europe.

And, get rid of companies like Bianchi USA which essentially license the rights to make "fakes" overseas and sell them in the USA.