Public Consultation - Quantum-Safe Handbook and Quantum Readiness Index

1. Quantum computing holds the potential to drive transformative breakthroughs across various industries, including logistics to pharmaceuticals and finance. However, such capabilities also introduce the “quantum threat” – sufficiently powerful quantum computers could undermine the cryptographic systems safeguarding existing digital infrastructure. This would endanger core business functions such as secure communications, financial transactions, and identity management, potentially disrupting operations, exposing critical data and eroding trust.

2. To address this risk, organisations must promptly initiate the transition of their cryptographic assets and systems to quantum-safe solutions. Although the timeline for quantum threat remains uncertain, proactive preparation is essential. The migration to quantum-safe solutions is a complex multi-year endeavour that needs early planning, resource allocation and coordination across systems, products, and processes.

3. To support organisations in their planning and preparation, CSA has launched two initiatives, in collaborations with public and private stakeholders, for public consultation:

a. Quantum-Safe Handbook: The handbook provides guidance for organisations, in particular Critical Information Infrastructure (CII) owners and government agencies, in preparing for the quantum-safe transition. It explains what is at stake, highlights key areas of focus, and sets out practical considerations and resources for organisations to begin building readiness. This handbook was jointly developed by CSA, GovTech, and IMDA, in collaboration with leading technology companies, cybersecurity consultancies, and professional associations.

b. Quantum Readiness Index (QRI): A self-assessment questionnaire that complements the Quantum-Safe Handbook. The QRI allows organisations to understand their levels of readiness and enables system owners and security practitioners to prioritise quantum-safe migration action areas. It also facilitates conversations with senior management and decision makers about the state of readiness to address quantum threat and can be used to seek buy-in on the recommended steps to strengthen their readiness. The QRI was developed in consultation with experts from the industry.

• Quantum-Safe Handbook [PDF, 1.47 MB]

• Quantum Readiness Index (Oct 2025) [PDF, 816 KB]

4. These two documents will be put up for public consultation from 23 Oct to 31 Dec 2025. We welcome CII owners, government and industry stakeholders, and experts to provide feedback, which will support us in refining these resources on quantum-safe migration. Feedback can be submitted via https://go.gov.sg/quantumsafefeedback, or enquiries directed to quantum-safe@csa.gov.sg.