A Security Analyst Discovered a Specific Series of IP Addresses

Multiple Choice

A security analyst discovered a specific series of IP addresses that are targeting an organization. None of the attacks have been successful. Which of the following should the security analyst perform NEXT?

A) Begin blocking all IP addresses within that subnet
B) Determine the attack vector and total attack surface
C) Begin a kill chain analysis to determine the impact
D) Conduct threat research on the IP addresses