Exercises
From NATO's Locked Shields to the UK-led Defence Cyber Marvel, Tuoni is trusted as the command & control framework behind some of the world's largest cyber defence exercises. Here is where it has been put to the test.
Locked Shields 2026
Locked Shields is the world's largest live-fire cyber defence exercise, run annually by the NATO Cooperative Cyber Defence Centre of Excellence (CCDCOE), where thousands of experts defend national-scale systems under relentless, realistic attack. At Locked Shields 2026, Tuoni was deployed as one of the red team's main command & control frameworks, driving offensive operations at scale. Watch the official recap below.
Watch on YouTube →Defence Cyber Marvel 2026
Defence Cyber Marvel is the UK's flagship cyber exercise and one of the largest of its kind - in 2026 hosted from Singapore for the first time, bringing together personnel from dozens of nations and organisations. The red teams ran Tuoni as their command & control framework throughout the exercise.
Crossed Swords 2025
Crossed Swords is NATO CCDCOE's full-spectrum offensive cyber exercise, sharpening the red teams, penetration testers and digital forensics specialists who operate at the sharp end of cyber defence. Tuoni was used by the training audience for their cyber operations. Watch the official recap below.
Watch on YouTube →
Locked Shields 2025
Locked Shields 2025 marked the exercise's 15th anniversary, drawing around 4,000 experts from 41 nations to Tallinn to defend national-scale systems against more than 8,000 simulated attacks. Tuoni again served the red team as one of its command & control frameworks, driving offensive operations against the defenders.
Defence Cyber Marvel 4
Defence Cyber Marvel 4 took the UK's flagship cyber exercise to Seoul, South Korea, gathering more than 1,000 participants across 34 teams and 27 nations. The red teams again operated Tuoni as one of their command & control frameworks.
Read the briefing →Crossed Swords 2024
Crossed Swords 2024 put around 200 specialists from 40 nations through the entire offensive cyber kill chain - red teaming, penetration testing and digital forensics. Tuoni was used by the training audience for their cyber operations.
Read the CCDCOE brief →
Locked Shields 2024
Locked Shields 2024 brought together some 4,000 experts from over 40 nations, with multinational blue teams defending national systems against a relentless red team. Tuoni was one of the command & control frameworks driving the red team's offensive operations.
Defence Cyber Marvel 3
Defence Cyber Marvel 3 was controlled from Tallinn in 2024, training more than 1,100 participants across some 41 teams. The red teams used Tuoni as one of their command & control frameworks.