In the world today, many people prefer to keep their money in their house save because of the perceived fraud by our traditional banking system that has decided to rip the populace off their hard-earned money without remorse
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If they are fearful of banks and decide to move to Bitcoin, it is a first good step but it is not enough.
If they open their accounts at centralized exchanges and store their coins in such accounts, they will face with risk like with banks or even bigger risk. Because regulations on cryptocurrency centralized exchanges are easier than on banks. So risk with centralized exchange will be bigger.