On a dark and windy night, a lone figure, whose face we don’t see in the darkness, slips in through the back door of a house. A couple is sleeping upstairs in their bedroom.
Suddenly, the figure is at the couple’s bedside and a shiny knife appears. The camera cuts away to show the knife as it is wielded repeatedly, with blood spurting in the air. The couple has been hacked to death with the intruder’s knife.
…Now that’s a definition of “hacking” that I remember.