Quantum computers will be able to hack Bitcoin much sooner than previously thought.

Google researchers have stated that breaking RSA encryption now requires 20 times fewer quantum resources — less than 1 million qubits instead of 20 million. The hack could take just a few days.

Currently, quantum machines like IBM Condor (1,121 qubits) are still far from this, but technology is advancing rapidly, while BTC protection is not.