Cybersecurity exercises: National Exercises Number of participants International Exercises TELCO23 In 2023, NÚKIB placed a significant focus on the telecommunications sector, organising October’s TELCO23, a non-technical tabletop exercise for representatives of selected telecommunications service providers. The aim was to verify the existence of security processes that minimise potential damage from cyberattacks and to establish proper communication protocols with the public, the media and within the organisation itself. This two-day exercise brought together government representatives and regulated entity representatives to discuss cybersecurity in the telecommunications sector and explore opportunities for cooperation. Comm Czech 2023 In August, the Comm Czech 2023 communication exercise aimed to verify the reachability of designated contact persons within entities regulated under the Act on Cybersecurity. Up-to-date and readily accessible contact details are crucial during crisis situations, when timely and effective communication with regulated entities is critical to preventing the spread of damage. Locked Shields Internationally, significant cybersecurity exercises were also held in 2023, including the well-established Locked Shields exercise in April, organised by the NATO Cooperative Cyber Defence Centre of Excellence in Tallinn, Estonia. Cyber Coalition The Cyber Coalition exercise, a regular international cybersecurity event organized by NATO, was held in November. 43