With all these buzz about quantum computer's threat to current encryption techniques, we could also use quantum computing against itself. I recently watched a good video, which is 15 minutes long, regarding these encryption techniques and how quantum computers can protect itself from other attackers.

"Will Quantum Computers break encryption?" -  https://youtu.be/6H_9l9N3IXU

And another thing to mention, quantum computer made by Google is nowhere near the needed qubits to break current encryption. I think Google's quantum computer is somewhere 50, while the needed to break is near 250.