Quantum Readiness: How to make your organization digitally secure for the quantum revolution

Quantum computers are no longer a distant prospect. While powerful, fragile quantum hardware may seem 15 to 20 years away, the impact on your data security could begin today. This phenomenon, known as "quantum cryptographic disruption" or Y2Q (Year to Quantum), means that data you encrypt and store now can be decrypted by quantum computers later. Therefore, it's crucial for organizations, especially in the B2B sector and public institutions, to start preparing now.

Quantum, a new dimension of digital risks

Most current security systems rely on cryptography based on mathematical problems that classical computers cannot solve efficiently. Quantum computers, however, use quantum algorithms like Shor's algorithm, which allow them to crack these problems much faster. This makes current encryption methods, such as RSA and ECC, highly vulnerable to powerful quantum computers in the future.

When digital threats become reality

Imagine if your secure communications, financial transactions, medical records, and critical infrastructure were suddenly compromised. This could lead to:

• Financial losses due to the cracking of cryptographic wallets and banking data.
• Privacy breaches due to leaks of sensitive data.
• Disruption of transport and energy networks.
• Deception through falsified information, which can lead to social unrest.

You see, one digital crack is enough to suddenly turn an ordinary working day into a strategic crisis exercise.

Quantum security starts today

Experts estimate that it will take between 12 and 16 years before quantum computers are powerful enough to break current encryption. That seems a long way off, but the risk of "store now, decrypt later" is already lurking. Malicious actors can already collect and store encrypted data, only to decrypt it later with quantum computers. This puts sensitive, long-lived information, such as medical records, particularly at risk.

How to build a quantum-safe infrastructure

There are two main strategies to become quantum safe:

1. Post-Quantum Cryptography (PQC)
   These are new mathematical algorithms that are resistant to quantum attacks. They can be integrated into existing systems relatively quickly because they are software-based. Standardization is underway, including through NIST.
2. Quantum Key Distribution (QKD/QKE)
   This is a physical method for exchanging cryptographic keys using quantum principles, where any eavesdropping attempt is immediately detected. QKD is extremely secure, but requires specialized hardware and is currently primarily suitable for highly critical connections.

Concrete steps for your organization

• Take inventory of where and how encryption is used within your organization.
• Classify data based on sensitivity and longevity.
• Develop a risk-based roadmap , prioritizing critical systems.
• Implement crypto-agility , so that cryptographic algorithms can be flexibly adapted without major system changes.
• Plan budget and time for implementation, including possible hardware renewal.
• Follow European developments and align your strategy with new standards and regulations.
• Combine PQC and QKD where appropriate, depending on the sensitivity and importance of the data.

Quantum readiness isn't a matter of "maybe later," but an immediate business priority. By starting now with inventory, risk analysis, and developing a flexible cryptographic strategy, you reduce the chance that a single digital attack will completely paralyze your organization.