Describe the overall organizational structure of the U.S. government's cybersecurity operations. What role does the Department of Homeland Security play in U.S. cybersecurity? Describe the division of duties among federal agencies under PPD-41. How did the Cybersecurity Act of 2015 affect cybersecurity information-sharing? What are criticisms of the information sharing program established by the Cybersecurity Act of 2015? What are examples of cyber-threat indicators under the Cybersecurity Act of 2015? Describe the five principles of the NIST Cybersecurity Framework and how organizations can apply them to their cybersecurity programs. How does the Posse Comitatus Act limit, if at all, U.S. military involvement in cybersecurity?