Every major shift creates new conditions that force a rethink of previously held assumptions. And arguably few advancements have the potential to do that as profoundly as quantum computing. Once thought as a technology still far on the horizon, quantum computing is increasingly moving from the realm of the abstract and distant into something we need to consider today.
Singapore’s Cyber Security Agency (CSA), for example, has described quantum-safe migration as a complex, multi-year undertaking and urged organizations to begin preparing now. In July 2026, CSA, the Government Technology Agency of Singapore (GovTech Singapore) and the Infocomm Media Development Authority (IMDA) released a Quantum-Safe Migration Handbook and Quantum Readiness Index to help organizations assess their readiness and prioritize action.
That emphasis on preparation is important because the challenge is unlikely to be solved by simply selecting a new encryption algorithm. Organizations will therefore increasingly need to consider what quantum resilience means for their own infrastructure, data and digital services.
The visibility challenge comes first
Before organizations can prepare for a quantum-safe future, they need visibility into the cryptography underpinning their digital environment today.
Modern enterprises depend on cryptography across applications, cloud services, identity systems, devices, APIs and third-party platforms. As quantum computing advances, some of the cryptographic foundations that organizations rely on today may eventually become vulnerable, creating a need to rethink how digital trust is protected.
The challenge is to understand where existing cryptography matters most, identifying information that needs to remain protected over the long term and building the flexibility to adapt as quantum-safe technologies mature.
The risk is particularly relevant for information with a long confidentiality lifetime – such as sensitive personal and intellectual property data – because an attacker can retain and decrypt them in the future when sufficiently capable quantum computing becomes available.
This changes how organizations should think about the quantum threat.
Singapore is building the foundations
Singapore has been taking a practical approach to this challenge.
In February 2026, IMDA said its National Quantum-Safe Network Plus initiative would support the deployment of quantum-safe networks nationwide, allowing businesses to access technologies including Post-Quantum Cryptography and Quantum Key Distribution. The initiative is intended to strengthen the resilience of critical infrastructure and enterprises handling sensitive data.
CSA’s July guidance provides another important signal. It recommends that organizations identify their most important assets, assess their cryptographic dependencies and establish migration priorities rather than waiting for the quantum threat to become immediate.
The government is also looking to engage industries, with the CSA and GovTech recently seeking input from stakeholders on the availability of quantum-safe products, platforms, consulting and systems integration services. This reflects the scale of the transition ahead, and for businesses operating in Singapore, it emphasizes the point that quantum readiness is becoming part of the country’s broader digital resilience agenda.
From quantum awareness to cryptographic agility
Simply preparing for one future algorithm or one predicted moment of disruption will not strengthen resilience; rather, organizations must build the ability to adapt as standards, technologies and threats evolve.
This is the principle of cryptographic agility, which is grounded in replaceable mechanisms that do not require an overhaul of the existing technology environment.
However, it requires enterprise-wide decision-making alignment along with technology suppliers . A company may have a well-understood internal environment but still depend on cloud services, software components or managed platforms whose cryptographic roadmaps are outside its direct control.
Quantum readiness therefore belongs within enterprise risk management, technology modernisation and third-party risk management. It should not sit in isolation as a specialist security project.
While the World Economic Forum’s 2026 Global Cybersecurity Outlook finds growing awareness of the quantum threat – with a significant 37% of respondents expecting quantum technologies to affect cybersecurity by 2027 – acute challenges in migrating legacy encryption underscore the scale of the challenge ahead.
Readiness is a process, not a deadline
There is understandable temptation to wait for greater certainty. When will quantum computing become commercially transformative? When will it pose a practical cryptographic threat? Which technologies will ultimately dominate?
Those are important questions, but they should not determine when preparation begins.
The more useful starting point is to understand the enterprise’s current cryptographic estate, identify the data and systems that matter most, and establish a roadmap for moving toward quantum-safe security.
Singapore is already putting the infrastructure and guidance around that journey in place. The next phase will depend on organizations turning that national momentum into practical action.
Quantum computing may eventually represent a fundamental change in how computing works. The security response should be equally forward-looking. Organizations that build visibility into their cryptographic dependencies today, prioritize what matters most and design for adaptability will be better positioned to navigate whatever the quantum era ultimately brings.
The objective is not to predict the future with precision but to ensure that when computing changes, security is not caught off guard.
