A party machine issue—a fully theoretical issue since these actions have never taken place so far—allows a member to access all of the blockchain's apps by utilizing a single computer because he or she happens to have the largest share of messages. An attacker first attacks a system's core domain, which gives him full control over the communication protocol. He takes back all the hooks and spyware. This way, the app can only connect to the malicious server, and the victim would be led to believe that the attacker is legit. In the vast majority of blockchain use cases addressed by Visa, speed and scalability are immensely important. These issues are also vital for startups striving to extend the blockchain across consumer industries. Bitwise, for example, allows companies to create and manage gift cards, as well as for businesses to build contact lists, respond to customer feedback, etc.
These use cases necessitate minimal conversion fees, and in some situations, it's the only way to succeed.