read this

regardless of the merits or not of this software :
most of its features we can live without or use the OS versions or free alternatives of its features
Its marketing methods seem to stem from the grimy PC side of things saturation bombing with web popups to convince you as users on a platform with few issues that you need to use its software to stay safe or run at normal speed.
I fundamentally dont really agree with any suite of software running in the background on a mac
background process are prone to slowing your machine down, If I have an issue, that is when I tend to run software and not before, which I believe you can get away with on a mac, maybe not a pc but thats a different matter.
Once you start down a route of believing you need security software running in order to be OK when using a computer, then its a bit like some company has imposed a yearly tax on you, for using your computer. this is to be avoided at all costs on the mac platform, for it appears to be the mainstay on the PC platform, that PC based software security companys have a strong unhealthy grip on PC users imagination.