This course gives cadets the ability to apply adversarial thinking in order to anticipate and defend resources. The course maintains a breadth of cyber topics, including secure programing best practices, system administration, and network scanning. Cadets will learn how to secure computer systems, patch vulnerabilities, and detect and remove malware from computer systems. **This is a provisionally approved course for the updated Cyber Science major, CYS1. It will need full approval by the Curriculum Committee in AY27-2 to continue. It may be used as a pilot in AY26-1 and AY27-1.**