> e.g. any payment on ethereum that is more than $745 [1] is at risk at one block.
The attack cost is based on extrapolated hashing power rental costs from NiceHash. NiceHash has 4% of the necessary hashing power needed to carry out an attack on Ethereum, so you would not be able to complete an attack for this cost.
From the 'Learn More' page:
> Note that the attack cost does not include the block rewards that the miner will receive for mining. In some cases this can be quite significant, and reduce the attack cost by up to 80%.
I made this website a few months back, and the goal wasn't to show the cost to attack Bitcoin, Ethereum, etc - it actually shows the exact opposite - it would be incredibly hard to pull off an attack without buying a ton of equipment since there isn't enough hashing power available for rent.
The point was to show the large risk that smaller coins have to being attacked.
The attack cost is based on extrapolated hashing power rental costs from NiceHash. NiceHash has 4% of the necessary hashing power needed to carry out an attack on Ethereum, so you would not be able to complete an attack for this cost.
From the 'Learn More' page:
> Note that the attack cost does not include the block rewards that the miner will receive for mining. In some cases this can be quite significant, and reduce the attack cost by up to 80%.
I made this website a few months back, and the goal wasn't to show the cost to attack Bitcoin, Ethereum, etc - it actually shows the exact opposite - it would be incredibly hard to pull off an attack without buying a ton of equipment since there isn't enough hashing power available for rent.
The point was to show the large risk that smaller coins have to being attacked.