Readiness matters because quantum computing poses a real long-term risk to the cryptography that underpins modern finance. Banks are especially vulnerable to “harvest now, decrypt later” attacks, which the Bank for International Settlements’ Project Leap has flagged as an immediate threat to the financial system.
The harvest now, decrypt later means that malicious entities could be stockpiling encrypted banking data today, waiting for the quantum hardware to catch up. Blockchains like Bitcoin and Ethereum face the same risk, which could leave modern finance exposed to a long-term security risk.
While practical, large-scale quantum machines capable of breaking bank security and blockchains such as Bitcoin do not exist today, estimates for when that risk could become real start in as early as 2029.
The HKMA is aiming for a perfect 10 on the Quantum Preparedness Index by 2030. To get there, the regulator is rolling out practical…
