A MOOC, or Massive Open Online Course, is an online educational program designed to be accessible to a large number of participants worldwide. MOOCs are typically offered by universities, educational institutions, or organizations, and are often free or low-cost. They cover a wide range of subjects and allow learners to access course materials, participate in discussions, and complete assignments at their own pace. MOOCs are valuable in cybersecurity education, enabling learners to gain up-to-date knowledge and skills from recognized experts without geographical or financial barriers. Many MOOCs also offer certificates upon completion, which can enhance professional credentials.