Despite being widely used on the Web the nowaday cryptography is expected to be unsecured. The quantum computing algorithms for hacking are already in existence.
The only thing is quantum computing that is forthcoming to the market over the next several years. So that the encrypted data will be available to the public.
By now quantum cryptography shields from such "future attacks". It rules out the risk of surreptitious communications monitoring by applying basic properties of elementary particles.
Even as we speak the quantum encrypting should be used by banks, corporate organizations, authorities and others, who are responsible for sustainable data privacy.