I suspect that the chart reflects the activity of Sophos software installed on Macs. (Yes, some people can be conned into buying av for Macs.) It says that is what Sophos saw and intercepted. What it does not say is that had there been no Sophos software that the Mac OS would have also intercepted those things and warned the users not to install them, or they simply fell harmlessly to the side with no affect on the Mac.