The quantum challenge in cyber security
Quantum computing is a fast-approaching reality. The International Year of Quantum Technology is a timely reminder that CIOs and CISOs must start preparing for the impact of this shift. While quantum computers promise breakthroughs in data processing and problem-solving, they also present a significant security risk: many of today’s encryption methods will no longer be effective against quantum-powered attacks.
What is post-quantum cryptography?
Post-quantum cryptography (PQC) is designed to protect data from quantum computers. Unlike traditional encryption, which relies on mathematical problems that are difficult for today’s computers to solve, PQC uses algorithms built to withstand the immense processing power of quantum machines.
Governments and industry bodies are already moving towards quantum-safe encryption. In August 2024, the National Institute of Standards and Technology (NIST) finalised the first three post-quantum encryption standards, designed to withstand attacks from quantum computers. These standards are crucial for securing sensitive information in the future. For senior IT and security leaders, this is the moment to assess your current security frameworks and ensure they are built for what’s ahead.
Why this matters now
The ‘harvest now, decrypt later’ threat
Quantum computers capable of breaking encryption don’t exist – yet. But be assured that cybercriminals are already preparing – many are collecting encrypted data now, with the plan to decrypt it once quantum technology advances. This strategy, known as “harvest now, decrypt later,” is a major concern for industries that handle long-term confidential information, such as financial services, healthcare, defence and government.
The impact on digital trust and operations
Security breaches caused by quantum attacks wouldn’t just expose sensitive data—they could also undermine trust in digital transactions, disrupt critical operations, and damage business reputations. Organisations that don’t prepare risk being caught off guard, facing not only regulatory penalties but also long-term loss of customer confidence.
A 2024 KPMG survey found that 60% of Canadian and 78% of U.S. businesses expect quantum computing to become mainstream by 2030. However, many admit they are unprepared for the security risks it brings. Waiting until quantum threats are imminent is not an option— the businesses that start preparing now will gain the upper hand.
Creating a strategic roadmap for a quantum-safe future will not only reassure customers and strengthen your company’s brand equity but will lay the groundwork for growth through acquisition and retention.
How to prepare for a quantum-safe future
PWC recommends treating data risk as a top-line business priority. But for any transformation initiatives to succeed, you need full visibility, which means taking a holistic approach to managing data risk.
But preparing for quantum threats doesn’t mean overhauling everything at once.Gartner’s research recommends implementing a crypto-agile security approach with a timeline split into three phases: current, transition and ongoing. A phased, strategic approach ensures a smoother transition while maintaining operational security.
Here’s where to start:
Assess your current security position
Begin with an audit of your organisation’s cryptographic systems. Identify where your most sensitive data is stored and how it is currently protected. This will highlight which areas need attention first.
Understand the road ahead
Quantum-safe encryption is an evolving set of standards. The transition requires planning and a clear understanding of which parts of your infrastructure need upgrading first. Focus on securing data that needs to remain protected long-term. AI can help with this, so consider developing an AI strategy and roadmap to strengthen data security.
Work with experts in quantum security
Navigating post-quantum security requires expertise. Partnering with data encryption specialists like Senetas ensures a smooth transition to quantum-resistant methods while minimising disruption to existing systems. And investing in crypto-agile products doesn’t have to be a costly, ongoing exercise – Senetas solutions don’t require the usual three-to-five-year refresh cycle. We help businesses like yours move towards quantum-safe encryption with a practical, cost-effective, phased approach.
Take action today
Quantum technology is developing rapidly, and while large-scale threats may still be a few years away, the steps you take now will define how prepared your organisation is when the time comes.
Prepare for the quantum future with the Thales Network Encryption Post Quantum Cryptography (PQC) Starter Kit. This kit helps organisations evaluate quantum-resistant measures in a secure environment, allowing for seamless testing of applications, data, and devices for a smooth transition to quantum-safe networks. Learn more.
Or contact us to discuss how we can help you transition to quantum-safe encryption with confidence.
