Safety can not come to the bitcoin investor. Nothing and absolutely safe. Everything has its own risk, its danger. No one knows what tomorrow will be like. Only know that if we do nothing then there is no danger nor money
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Well, if you are thinking of investing your money for gaining some profit then you should risk your money and if you are thinking that you can save your money in bank or something then I must tell you that that's the best way to burn your money as it won't make your money grow as the intrest your bank provide is far less than the inflation rate. Now talking about investor safety, they can store their bitcoins into a hardware wallet or maybe make a couple of backups and store them in different places to make sure they have reliable security and also never access your wallet on a public computer as risk of getting hacked is pretty high.
Absolutely true. If you are looking for a safe place, maybe pillow, but there is also possibility of being stolen. However, the security level of hardware wallets is millions of times more than banks. If banks do not have their own earnings, they will never give you interest or credit.