After McAfee ran it's automatic update and installed a dat file for the anti-virus I received a message regarding a PUP. I chose to remove, then proceeded to the Quarantined and Trusted Items area. I noticed in the list of Quarantined and Trusted Item a PUP named Killapp. I did remove all the listed PUPs, and haven't had any computer problems as of yet. I want to know what is Killapp? Also, is this Killapp harmful?