All POW based networks assume that majority of the miners is not hostile. It is highly dangerous to have a single entity controlling 51%+ of the network.
Mind, attacks can be executed from as low as 25% of the total hashrate present on the network. BCH is vulnerable because it has on 1-3% of the global SHA256 hashpower, meaning...
...that a single semi-wealthy person could attack it if he/she wanted to. Now ponder the groups that are vocally anti-BCH....
#ChangeThePOW
