Bitcoin is completely secure and unhakable
It is a misconception to say that bitcoin is completely secure and unhackable. Indeed, the nature of bitcoin is that it is more secure than a huge number of other cryptocurruncies, regardless of the fact that it is a technology that can be hacked and manipulated. In addition, Bitcoin has to suffer from the manipulation of the market and as a result, even if did become completely unhackable, external entities could still use it to manipulate and change the markets, unfortunately.
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From @aqsaa