1. Some new or existing payment company helps merchants to transact in cryptocurrency, because it's difficult for the merchants to do it themselves.
2. This payment company now becomes the new target for attacks, and the only change is from fiat currency to cryptocurrency.
An obvious answer to #1 is for merchants to process cryptocurrencies themselves, but that implies that all the problems in dealing with fiat currency (fraud detection, accessibility, scalability, etc.) is somehow easier with cryptocurrency, and I am not sure that is the case.
1. Some new or existing payment company helps merchants to transact in cryptocurrency, because it's difficult for the merchants to do it themselves.
2. This payment company now becomes the new target for attacks, and the only change is from fiat currency to cryptocurrency.
An obvious answer to #1 is for merchants to process cryptocurrencies themselves, but that implies that all the problems in dealing with fiat currency (fraud detection, accessibility, scalability, etc.) is somehow easier with cryptocurrency, and I am not sure that is the case.