As a miner, you are likely not going to accept because your entire revenue stream comes from the cryptocurrency being stable. If someone uses your hashrate to l

As a miner, you are likely not going to accept because your entire revenue stream comes from the cryptocurrency being stable. If someone uses your hashrate to launch an attack, it's a direct threat to your future revenue especially if the attack discredits the security of the token you mine. In this case though, Bitcoin Gold shares a hashing algorithm (Equihash) with many other blockchains. It is possible that some Zcash mining farm decided to attack Bitcoin Gold because they felt the revenue from attacking Bitcoin Gold was greater than the potential damage to their income, which is primarily Zcash based. I'm just grasping at straws here, but generally speaking it's a bad idea to share hashing algorithms with another cryptocurrency, especially if that cryptocurrency is substantially more valuable (in terms of monthly block reward) than your own. And, all GPU-mined coins are essentially sharing one algorithm, because the hardware can jump between them easily. So all GPU based coins share this vulnerability, where the tiny GPU mined coins could easily be attacked or wiped out by a large Ethereum farm at any point.