Toward Quantum-Safe Networks: the new frontier of Telecom Security

How telco networks are preparing for the quantum era

2025 was declared the International Year of Quantum Technologies, highlighting how these technologies are steadily reaching industrial maturity across multiple sectors, including telecommunications. The European Union, through the Quantum Act, aims to overcome fragmentation and accelerate quantum industrialization by investing in infrastructure, skills, and international standards.

While 2025 recorded record global investments—marking the transition from experimental to industrial consolidation—there is a growing need to ensure technological sovereignty, particularly in addressing emerging cybersecurity challenges. At the same time, the expanding attack surface driven by AI, cloud, and distributed infrastructures underscores the need to rethink protection models in the medium to long term.

In this context, protecting critical infrastructures—from telecom networks to energy and financial systems—has become a strategic priority. The resilience of digital communications is in fact one of the pillars of economic and social security, as well as of countries’ technological sovereignty.

The quantum threat and the urgency of transition

Quantum technologies pose new challenges for securing digital communications. Widely used asymmetric cryptographic algorithms such as RSA and ECC rely on complex mathematical problems that could become vulnerable as quantum computing capabilities grow.

Data is one of the most valuable assets for governments and enterprises, fueling the digital economy. The “harvest now, decrypt later” scenario—capturing encrypted data today to decrypt it in the future—requires immediate action.

Telecommunications play a central role. Transport networks, mobile authentication systems, management platforms, and infrastructures supporting public and industrial services are critical assets that cannot tolerate structural vulnerabilities.

Telco networks underpin essential services such as digital healthcare, energy, finance, public administration, and industry. Their compromise could have systemic impacts. International analyses suggest a timeline of less than a decade for migration to quantum-safe solutions, making early planning essential.

Telecommunications: the first industrial testbed

The telecom sector is among the first to face the need to evolve cryptographic security models. Operators are already launching evaluation and migration programs toward quantum-safe solutions.

Long-term security models are required by the evolution toward Beyond-5G, 6G, edge computing, and mission-critical applications such as blockchain, agentic AI, and cloud distribution.

Pillars of post-quantum security

The transition to quantum-safe ecosystems relies on new technologies and a paradigm shift in key management:

• Post-Quantum Cryptography (PQC): quantum-resistant algorithms, standardized since 2024
• Crypto-agility: the ability to update cryptographic algorithms without disrupting operations
• Hybridization: combining traditional and post-quantum cryptography for gradual transition
• Advanced key management: flexible and scalable systems for secure key lifecycle management

PQC and advanced key management represent the most immediate and scalable path.

Another emerging approach is Distributed Symmetric Key Establishment (DSKE), which enables large-scale symmetric key distribution without relying on asymmetric cryptography, based on a distributed trust model.

Resilient networks and protected data

The transition to quantum-safe infrastructures is not just a technological upgrade but a strategic transformation.

Telecom operators must define security strategies early, integrating PQC, advanced key management, and secure key distribution solutions.

The real challenge lies not only in adopting new technologies but in ensuring interoperability and crypto-agility. Telecommunications have both the opportunity and responsibility to lead the development of a quantum-safe ecosystem.

Want to learn more?

For deeper insights into the evolution of Quantum Technologies and their impact on telecom security, read the interview with Fabrizio Bianchi, Project Manager – Financed Projects, where he shares his perspective on emerging trends and strategic priorities in the quantum landscape.