The recent blackout in Paris, which disrupted electricity, communications, and transport, highlighted how dependent critical infrastructure is on connected systems. It raises important questions: Can essential services operate during a major outage? Can connectivity with critical infrastructure, assets, and devices be maintained? During an outage, is it possible to carry out mission-critical communication between emergency services involved in solving the problem?

Critical infrastructure encompasses energy, utilities, transportation, and public safety, all of which rely on increasingly interconnected IT and telecom networks. As the lines between those networks blur, new risks and complexities emerge, reshaping how states must protect and manage their core systems.

The convergence of IT and telecom networks

Early IT and telecommunications networks were once independent of each other, serving distinct functions. IT networks primarily supported business operations, data management, and software systems, while telco networks handled voice and data communication. The convergence of these two fields has given rise to what we now call "techco" networks, primarily driven by the introduction of new technologies and the growing demand for seamless connectivity.

IT networks have long been a frequent target for cyberattacks that focus on compromising data and causing system disruptions. In contrast, early telecommunications networks, rooted in mechanical technologies and closed systems, were largely immune to such problems. However, as the two gradually started to merge and become more technologically complex, attacks on billing systems (where telecom and IT intersect) emerged as a significant concern.

Over time, the convergence of these once-separated infrastructures and the rise of new technologies brought an end to that simpler, more manageable era. What followed was an ongoing race between the threats to digital communication and the efforts to maintain reliable connectivity. In this increasingly complex landscape, the focus shifted to ensuring communication services could support those who protect life, health, and property, even in the face of evolving challenges.

Geopolitical and environmental pressures on digital networks

Today's global environment has added pressure on digital networks to evolve in unparalleled ways. Hybrid and cybersecurity threats have become nearly constant, with nation-states and independent actors influencing geopolitical tensions through network vulnerabilities. At the same time, the increasing frequency of natural disasters caused by climate change poses serious challenges in disaster prevention, response, and recovery. Adding to this are industrial and transportation accidents, which are rising in part due to growing populations and increased demand for goods and services.

Traditional crisis responses, such as disabling parts of fixed and mobile networks in disaster zones, are no longer sufficient. Simply allocating resources to emergency services isn't enough either, as those systems are equally vulnerable to disruptions. Prioritizing communication for select groups is outdated in a world where digital connectivity is essential for everyone. Today, the very foundation of society relies on robust, secure, and resilient digital communication.

Operational challenges for managing critical networks

One solution to address modern network challenges is the concept of critical networks. These are isolated, specialized communication structures designed to ensure reliable and secure functionality during crises while maintaining operational capabilities in routine use. These networks differ significantly from public and private digital communication systems, and are designed for limited user bases and services where uninterrupted functionality is a top priority.

Critical networks are built using a set of guiding principles designed to enhance resilience. Coverage and capacity must be optimized with minimal infrastructure to ensure redundancy and consistent operation in crises. Additionally, they often adopt low-frequency spectral bands, such as the 450 MHz band, owing to their wide-area coverage and reliability. Other enhancements may include satellite complements, though these can increase operational costs and lower availability for end users.

A fundamental aspect of critical networks is their engineering for high redundancy. Vital functions are virtualized, ensuring core functionality can be relocated or duplicated in the event of natural or human-made disruptions. Alongside this, network hierarchies and robust switching systems enable dynamic adaptation when resources are compromised. To support these environments, specialized digital support systems (DSSs) provide a wide range of functionalities essential for business and operational continuity, including connectivity and access management, mass operations on devices and SIM cards, comprehensive network management (from planning and inventory to reconciliation and assurance), and support for critical communications across diverse technologies and channels. However, designing such systems requires collaboration with domain experts, as traditional knowledge from public digital communication systems is insufficient for these scenarios.

Building future-ready critical networks

The evolution of digital communications has fundamentally reshaped the dependencies of state infrastructure and security. While this evolution has unlocked unparalleled convenience and capabilities, it also introduces a host of new challenges ranging from cybersecurity risks to natural disaster recovery.

The future requires not only technical innovation but also collaborative efforts that bridge the gap between network operators, AI providers, governmental entities, and connectivity management solutions providers, such as Comarch. Organizations tasked with developing critical networks must address the unique challenges head-on, ensuring robustness in their design without succumbing to the pitfalls of over-automation or oversimplification.

By redefining priorities, governance, and engaging in proactive preparation, states can turn critical networks into a strategic advantage. These networks will be crucial in building a secure and resilient future in a world increasingly reliant on digital communication.

Discover how Comarch enables efficient and secure critical networks. Visit our portfolio page and explore our comprehensive offer for the utilities industry.

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