NATO Concludes Cyber Coalition Exercise in Estonia, Preparing for Future Digital Threats

NATO has wrapped up its annual Cyber Coalition exercise in Estonia after a week of intensive drills focused on protecting networks and critical infrastructure from advanced cyberattacks. 

More than 1,300 cyber defenders joined the 2025 exercise. Participants represented 29 NATO countries, 7 partner nations, as well as Austria, Georgia, Ireland, Japan, South Korea, Switzerland, Ukraine, the European Union, industry experts, and universities. 

The goal of the training was to strengthen cooperation and improve the ability to detect, deter, and respond to cyber threats that could affect military and civilian systems. 

Commander Brian Caplan, the Exercise Director, said that Cyber Coalition brings countries together to learn how they would operate during a cyber crisis. He highlighted that cyber threats do not stay within borders and that sharing information is key to improving global defence. 

This year’s exercise presented seven complex scenarios that mirrored real-world challenges. They included attacks on critical national infrastructure, cyber disruptions linked to space systems, and a scenario called “Ghost in the Backup,” which involved hidden malware inside sensitive data repositories. 

Multiple simulated threat actors carried out coordinated digital operations against

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