We can no longer pretend Q-Day is only theoreticalEvery major organisation is sitting on something incredibly valuable that not many people understand: cryptographic trust. Quantum computing is an advanced field of computing that works off the principles of quantum physics to solve complex problems exponentially quicker than the world’s most powerful supercomputers. All of which brings us to Q-Day, a hypothetical or looming milestone where quantum computers become powerful enough to break standard public-key encryption. This all means that there is a very real risk that quantum computing could devalue or destroy cryptographic trust. Quantum computing is progressing through punctuated breakthroughs such as longer-lived quantum states, more usable qubits, and more.