Government don't do it but, for stop a crypto, you ddos all node of the coin and he are not very strong... (don't follow all conversation, for bitcoin, too much node for that... but for an alt coin...)
In the 2 last day, i earn 2 000 000 coin with my ugly nvidia with 70 hash... Don't think people pay realy for something easy like that. Soon block suppose to pay less. After that can be good... Or put your exchange, big risk he drop at 1 litoshi and after he grow when difficulty up...
9 january, lost 0.08 btc from thief... suppose coming from dogecoin giveaway mixed with other coin dosen't exist... Don't know if he have a link, just strange that appen the same date...