There is no attack in a decentralized privacy network. It’s just either regular transactions or fusion transactions.
Of course, there could be elements and individuals who would deliberately perform such activities that would cause some degree of a trouble for a young distributed, decentralized network that consists mostly from unmanaged low powerfull nodes.
And that was exactly what happened to DeroGold a few months ago. One day we woke up in the night looking at network & node monitor. Hash rate down, pools mostly not operating, alternate chains on the network, only about a 4-5 nodes respoding and keeping up.