The Chief Information Security Officer $($CISO$)$ recently returned from a security conference where she learned about software that can be installed on individual servers to monitor for malicious activity and hacking attempts and immediately stop any activity that it detects. She has decided to conduct a pilot on the HR servers, which are virtual machines running on an internal private cloud and contain sensitive employee data. Janna has been tasked with recommending a product to meet the CISO's request. For which of the following technologies should Janna be looking?

a$.$ HIDS

b$.$ HIPS

c$.$ NIDS

d$.$ NIPS