The breach that has already happened Most New Zealand coverage of quantum computing treats it as a future tech curiosity. That framing is wrong, and dangerously so. The attack is underway right now. It is called harvest now, decrypt later (HNDL), and the model is brutally simple: adversaries, including state-backed actors, are already stealing encrypted data and warehousing it until quantum machines are powerful enough to unlock it. If your business holds anything that must stay confidential for years – customer records, health data, legal files, intellectual property, identity documents – the breach window has already opened. The encryption protecting that data today is not a permanent lock. It is a timer. As Brandon Hutcheson, Director of Quantum at HSO, put it writing for the Institute of Directors, “Quantum computing doesn’t only create new opportunities for breaches – it exposes those you’ve already had.” The stolen data “remains encrypted and unusable, but it becomes readable in the future.” AI just moved the deadline forward The reason this story is live now is the convergence of AI and quantum. AI is being used to help quantum computing clear the technical barriers that once gave security planners a comfortable runway. That runway is collapsing. Google has warned that quantum computers could break some of the cryptographic systems underpinning most internet transactions as early as 2029. The original estimate for so-called Q-Day was 2035. Tellingly, Microsoft has already pulled its own internal quantum-safe transition deadline forward from 2032 to 2029. When the companies building the machines accelerate their own defences, that is the signal that matters. Paul Quickenden, country manager at crypto firm Swyftx, framed the strategic point cleanly: “Quantum is an exponential technology. It’s not a problem until it is.” The sceptic’s line – that no fully capable quantum computer exists yet