This is worth reading:
Title: Spreading light over quantum computers
-snip- They have constructed a simulation tool, Quantum Simulation Logic, QSL, that enables them to simulate the operation of a quantum computer in a classical computer.
-snip-
It's always been like that, QC connected to a normal computer to "
work"... now:
A simulation conducted using normal computers; it may impress investors (
their target market) but not most of the community.
I'd say that the "
light" to the future of QC is too dim to be a threat. That's even an article released on 3 Sept 19.
-snip-Quantum-resistant techniques
Quantum computing can be just as effective for cryptographers as it is for hackers. Unobserved, superpositioned particles exist in multiple states, but when detected, they collapse to one point in space-time. Quantum cryptography has the same properties; because the protons that make up an encoded transaction shift upon observation, a successful attacker would have to break the laws of physics to intercept it.-snip-
So, this "
quantum computing" thing was based on string theory which is mathematically credible but still "
not science".
Basically, you need to break the laws of physics to hack a system that breaks the law of physics... hmm, it's not wrong.
A classic supercomputer that can break secp256k1 which can lead to stolen UTXO with "
exposed public key" like the #1 in figmentofmyass' list
is more of a reality and maybe just a few years away.