“[There’s] a Y2K-level event coming. We just don’t know what the end date is. And if you haven’t already started your journey to become quantum-resistant, you might be too late.”

This warning from Peter Bordow, head of quantum technology research and development at Wells Fargo, may sound apocalyptic. But the comparison to the unknown effects that faced global systems at the turn of the 21st century may even understate the threat quantum computing presents to decentralised finance (DeFi) – and