Cybersecurity is essentially the measures taken to protect against criminal or unauthorized use of electronic data. What steps are taken to prevent these crimes? What exactly are the threats? How and who do they attack? We'll answer these questions and more in this course on the basics of cybersecurity. We'll define key terms like cybercriminals, cyberattacks, cyberterrorism, etc. We'll also review the high-level history of cybersecurity in the United States.