antivirus

Why trial version are dying?

As I have new toy (MacBook), I need new software for it. As I’m a little paranoid about security (yeah, I know, there are no viruses on Mac) I’ve wanted to add some antivirus to my new system. I’ve worked with many such programs in the past, so I know that sometimes (or mostly) it happens that they’re slowing down computer. I’m new to Mac OS and very happy already about it performance, so I don’t want to ruin it.