LOL. So much for the hype about Macs being above having malware issues.
Please read the article.
A Mac with Windows malware is not affected. Just like a Windows machine with Apple malware is not affected.
These were files downloaded from the internet, with WINDOWS malware present. Unless the Mac user opted to boot into an old, unpatched version of Windows, without any anti-malware programs installed (dubious case), he wouldn’t be affected at all.