Fees cost almost nothing to hostile miners. With a 20% fee, they get 100% of their hashrate through the theft, and 80% from the pool. So long as you pay anythin

Fees cost almost nothing to hostile miners. With a 20% fee, they get 100% of their hashrate through the theft, and 80% from the pool. So long as you pay anything at all to new miners doing this attack is beneficial.