This newest OSX.Pirrit variant has infected tens of thousands of Mac computers around the world. Typical adware campaigns enable the attackers to flood a person’s computer with ads. However, OSX.Pirrit not only bombards Macs with adware, it spies on users and runs with the highest user privileges, enabling hackers to leverage this adware to capture personal information on the users, including bank account logins and intellectual property of businesses.

It has all the hallmarks of classic PUP (Potentially unwanted programs) but as the author points out in this fantastically detailed post - is it time to just start calling these apps what they truly are - Malware