In the address by Glenn Gerstell, "Confronting the Cybersecurity Challenge," at the 2017 Law, Ethics and National Security Conference at Duke Law School, he discusses the time and attention spent assessing today's cyber threat. Accordingly, malicious cyber activity can be placed into categories. Which of the following category(ies) were on Gerstell's list? Group of answer choices All answers are correct. Cyber crime Cyber espionage Cyber mischief