If you do any reading about the state of malware on the Mac, you will come across PUP’s (Potentially Unwanted Programs). PUP’s are installed on your Mac accidentally. They usually come in the form of Adware. They can cause problems on your Mac for sure. Many malware programs detect them. This article explains more of what PUP’s are and what Apple is doing to combat them. It pays to have a good Virus removal or Malware removal program these days.