Keep your security set to “App Store and identified developers” Don’t download software from third party sites.If you use torrents, don't. Mac provides all the protection you need with SIP (System Integrity Protection).I About System Integrity Protection on your Mac - Apple Support That means downloading and knowingly giving your password for it to download. You really have to actively invite some malware in for it to happen. And they are renowned for borking Mac systems.Ī Mac can pick up malware but not if you just use common sense. So, anti-virus programs are selling a cure for a disease that doesn't exist. There are no viruses that can attack Mac.OS X. As far as AV software none is recommended or needed. I can't talk to the lack of a DVD player, that is Apple's call.