There was an interesting feature about fakes in one of the SA comics
Alibaba, aliexpress and DHgate were mentioned a lot. Apparently Specialized is the most faked brand because they are essentially a design house and everything is outsourced. One individual had bought a Spesh Venge which is apparently a top-end road bike and from the start there were a few oddball faults. Spesh had it back and tested it to destruction and although it broke sooner than it should've, it would've probably been OK for the average MAMIL.
It wasn't a fake as such it had been made in the same place as the real Venge frames but had failed Specialized's QC and made its way onto the grey market