Cyber Fortress 26 Enhances Cyber Defense Against Domestic Threats

• •Cyber Fortress 26 focused on domestic cyberattack scenarios involving hydroelectricity.
• •The exercise included military and civilian experts from various agencies and NATO partners.
• •This iteration validated one battalion and recertified two cyber protection teams.

Cyber Fortress 26, hosted by the Virginia Army National Guard’s 91st Cyber Brigade, took place from July 25 to August 8, 2026, focusing on cyberattack scenarios related to hydroelectricity. The exercise involved military and civilian cyber experts from various agencies, including NATO partners and the Cybersecurity and Infrastructure Security Agency (CISA). This year's event included the validation of the South Carolina National Guard’s 125th Cyber Protection Battalion and recertification of two cyber protection teams. Participants engaged in a domestic operations exercise simulating a real-world cyber incident. The exercise utilized the Persistent Cyber Training Environment for realistic scenario execution, enhancing operational technology defense training. The collaboration included multiple state and federal agencies, emphasizing a whole-of-government approach to cybersecurity. The exercise is recognized as one of the premier military exercises addressing significant cyber threats to critical infrastructure.