Quantum Computing - cryptocurrency destructor?

Imagine, a computer powerful enough to hack all cryptocurrency wallets by knowing the public keys stored on the blockchain... That reality isn’t far away, and therefore, questions regarding security on the blockchain are on the rise.

The computing power of quantum computers is massive and the incentive to be the first to build one has the potential to reap enormous monetary rewards, both ethically and unethically. So are we in good hands?

You may be wondering, how far away is the creation of the first quantum computer? How will our cryptocurrencies be safe with the existence of quantum computers? What will a quantum computer mean for the technology industry as a whole?

We begin to answer some of the above questions here.