hwapi.exe is a process associated with McAfee HackerWatch Service from McAfee, Inc..
This service updates hackerwatch.org website with any suspected security attack which you decide to report to HackerWatch, a service run by McAfee. Disabling or enabling it is down to user preference.
Non-system processes like hwapi.exe originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you
check your registry to identify slowdown issues.