MacOS & Silver Sparrow

  Do MACs need anti-virus?

 Depends.

It is hard to write virus for Linux based systems, like MacOS. Strict definitions of computer virus imply code injected into running processes or executables. This is how Microsoft Windows "works".

However, malware has always existed for MacOS. Usually this malware takes the form of Adware. Software designed to deliver ads.

 So some protection exists in MacOS. Gatekeeper and the like. 

Recent research has indicated an unknown purpose for malware infecting intel and apple MACs. Dubbed "Silver Sparrow" this malware's Phone Home lives on the Amazon Web Services cloud.

So, due diligence, good cyber hygiene, and the realization that MACs are not totally immune to modern malware techniques should serve MAC users well.