ThreatScene is pleased to share the latest announcement from THYREOS CYBER, the cybersecurity venture founded by EFA GROUP and ThreatScene to develop advanced cyber capabilities for defence, critical infrastructure, and high-reliability environments.
THYREOS CYBER has introduced Palestra, an integrated cybersecurity exercise and operational readiness platform designed to help organisations assess their real cyber readiness under realistic and controlled conditions.
For ThreatScene, this marks another step in our broader mission to support organisations that cannot afford theoretical readiness. Palestra brings together cyber exercises, operational assessment, Digital Twin approaches, and structured evaluation into a single platform, helping teams test not only technical controls, but also processes, coordination, and response performance.
The full THYREOS CYBER announcement follows below.
Press Release
THYREOS CYBER introduces Palestra: an innovative cybersecurity and operational readiness solution
Athens, 8 May 2026. THYREOS CYBER, the new company established by EFA GROUP and ThreatScene with the mission of developing advanced defence cybersecurity capabilities, introduces Palestra, an integrated cybersecurity exercise and operational readiness platform designed to prepare organisations against modern cyber threats under realistic and controlled conditions.
Palestra introduces a new, holistic approach to cybersecurity, addressing the critical gap between traditional cyber ranges and the modern need for systematic, continuous, and measurable operational readiness. It is a highly differentiated platform that brings together scenarios, teams, processes, systems, and operational environments within a unified cybersecurity assessment framework.
While conventional platforms primarily focus on training and attack simulation, Palestra shifts the emphasis toward the structured evaluation of systems, processes, and operational performance.
Through a unified environment for scenario design and execution, the platform enables organisations to move beyond fragmented and isolated exercises toward a consistent, scalable, and controlled evaluation of their cybersecurity capabilities. It supports the systematic assessment of readiness across teams, processes, and operational environments, providing increased rigour, transparency, and repeatability in the way security is tested and evaluated.
At the same time, Palestra incorporates Digital Twin approaches, enabling the simulation and testing of systems and infrastructures in ways that go beyond traditional exercises focused exclusively on teams and processes. These capabilities pave the way for more comprehensive, realistic, and high-fidelity testing, particularly for critical infrastructure and defence environments.
The platform is designed for cybersecurity teams, executive leadership, critical infrastructure operators, and defence organisations, enabling coordinated evaluation at both technical and operational levels. For organisations where direct security validation in production environments is complex or impractical, Palestra provides a reliable, controlled, and effective alternative, substantially enhancing resilience and operational readiness.
“Palestra enables organisations to move from fragmented and isolated exercises to a structured, holistic cybersecurity approach, providing measurable visibility into operational readiness before it is required under real-world conditions,” said George Menexis, CEO of THYREOS CYBER.
“By combining high-fidelity simulation with structured operational evaluation, the platform enables security to be tested under conditions that reflect the complexity of real environments, without the risks associated with live systems. This represents a differentiated capability for Greece and international markets, supporting organisations, critical infrastructure operators, and defence entities in proving cyber readiness, resilience, and response capability against today’s threats.”
About THYREOS CYBER
THYREOS CYBER was founded in 2025 by ThreatScene and EFA GROUP, with a mission to deliver advanced cybersecurity services and platforms for critical and high-reliability environments.
By leveraging threat simulation capabilities, realistic cyber-attack emulation, and state-of-the-art cyber-range environments, the company provides solutions tailored to operational needs. These solutions enable effective risk assessment, verification of operational readiness, and assurance of uninterrupted functionality in the face of constantly evolving cyber threats.
Learn more at thyreoscyber.com.
What this means for ThreatScene
ThreatScene’s role in THYREOS CYBER reflects our continued focus on operational cybersecurity, incident response, adversary simulation, and readiness validation for organisations operating in complex environments.
Through this venture, ThreatScene contributes field-tested cybersecurity expertise to solutions designed for defence, critical infrastructure, and organisations where resilience must be proven before a real incident occurs.
For more information about cybersecurity readiness, incident response, and advanced security assessment needs, contact ThreatScene.
