macOS has a builtin malware scanner, XProtect: http://osxdaily.com/2017/05/01/check-xprotect-version-mac/ http://osxdaily.com/2017/05/01/check-xprotect-version

macOS has a builtin malware scanner, XProtect: http://osxdaily.com/2017/05/01/check-xprotect-version-mac/ http://osxdaily.com/2017/05/01/check-xprotect-version-mac/ If you want additional protection, I believe your best option is Avast: http://www.tomsguide.com/us/best-antivirus,review-2588-6.html http://www.tomsguide.com/us/best-antivirus,review-2588-6.htm... https://www.avast.com/free-antivirus-download https://www.avast.com/free-antivirus-download