Modernizing Legacy Software: CR14’s First-Ever Scientific Publication

Legacy software is the backbone of many defence and security systems. While these systems were once at the forefront of innovation, they now present a significant challenge: how do we modernize mission-critical tools without disrupting their functionality or compromising security? At CR14, we don’t just ask these questions—we find the answers.

Sõjateadlane – Estonian Journal of Military Studies

We are proud to introduce our first-ever scientific publication, Comparative Study into Archaic Software Integration Based on NATO S4 Software Library, published in Sõjateadlane – Estonian Journal of Military Studies. This research explores the complexities of integrating legacy software into modern military and security ecosystems, ensuring that vital systems remain operational, secure, and adaptable in today’s rapidly evolving cyber landscape.

The Challenge: Old Systems, New Threats

Many defence and critical infrastructure networks rely on software built decades ago. While these legacy systems have proven reliability, replacing them entirely is often infeasible due to cost, security risks, and operational dependencies. However, maintaining and securing these older systems becomes increasingly difficult as cyber threats grow more sophisticated.

Why does this matter?

Defence and national security systems cannot afford downtime, making seamless software integration a priority. Modernizing legacy software ensures interoperability across NATO and EU defence networks, preventing technological fragmentation. Upgrading these systems with contemporary integration techniques enhances cybersecurity, reducing vulnerabilities to cyberattacks.

The CR14 Approach: Finding the Best Path Forward

Our study examines two primary methods of integrating legacy software into modern environments: Command Line Interface (CLI) and Web API approaches. By analyzing their efficiency in areas such as CPU/RAM usage, response times, and adaptability, we provide a comparative framework for defence organizations seeking to modernize their software infrastructure.

The research highlights the advantages and trade-offs of each approach, offering practical insights for military and security professionals facing similar modernization challenges. More than just a technical deep dive, this study serves as a roadmap for bridging the gap between past and future technologies in critical defence applications.

Beyond Technical Challenges: A Strategic Imperative

Software modernization isn’t just about improving efficiency—it’s about strategic resilience. The ability to seamlessly integrate legacy systems determines how well organizations can adapt, defend, and innovate in an increasingly contested cyber domain. The findings of our study provide tangible benefits for military decision-makers, policymakers, and technology developers looking to enhance operational security without overhauling entire systems.

With this publication, CR14 takes an important step toward shaping the future of cybersecurity and defence technology. But this is just the beginning—our commitment to cutting-edge research and practical solutions will continue to drive innovation in the field.

Read the full article in English (pages 80-103) here

MoU signing in Solingen

Building Cyber Resilience: CR14 and Bergische Struktur- und Wirtschaftsförderungsgesellschaft Join Forces

Cyber threats do not recognize borders, and neither should our defenses. As the digital landscape evolves, cross-border collaboration becomes essential in strengthening cybersecurity resilience. In line with this mission, CR14 has signed a Memorandum of Understanding (MoU) with Bergische Struktur- und Wirtschaftsförderungsgesellschaft mbH, marking the beginning of a strategic partnership between Estonia and Germany to advance cybersecurity innovation.

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