I never look to harm other people, but according to this quiz I got quite "dark" results. So it doesn't seem like they are specifically considering harming others as the definition of dark traits.

I got most highest result in Narcissism or Entitled Self Importance. This just means that I'm ambitious and it's important for me to succeed and others to see that I am successful. It doesn't mean I'm harming others. Most of my motivations in life are for people to consider me to be intelligent for instance, but I don't see how it specifically harms anyone. I don't want them to consider me intelligent on flawed premises.