maybe many of the scammers we encounter come from nigeria, but believe me, they are not the most numerous, there are still other countries such as india, china, brazil and several other countries. usually what they target are people from developed countries, such as america, europe or the middle east, who have limited knowledge of technology. the cause of its increasing massiveness is due to poverty and the lure of big money to them, so they do not hesitate to get involved as scammers.