...revisited: 2nd independent case of quantum supremacy: "Named Jiuzhang after an ancient Chinese mathematical text, the new quantum computer can perform a calculation in 200 seconds that would take more than half a billion years on the world’s fastest non-quantum, or classical, computer." Such a computer will eventually be able to hack anything. https://www.sciencenews.org/article/new-light-based-quantum-computer-jiuzhang-supremacy