Uses of Host-based IDS

Looking at host-based IDS after NIDS gives us the basis to begin to make some comparisons between the two. Last conference you were asked to find an IDS tool and describe it. This week your task is a bit more analytical – find an example of a system (or type of system) that you would recommend protecting with host-based IDS. Post a topic describing the system and briefly explaining why HIDS would be appropriate to use as security measure.

I just 2-3 paragraphs with references is sufficient