The WWW is the new "Wild Wild West"
Apple has protected your computer from Viruses very well, People that make this stuff have figured this out and NOW they need "YOUR HELP".
I often say you need to be Leary but not Scared of everything on the Internet. Sites like Facebook, News or pretty much any informational sites they are there to make money. One way to make money is to get it from you by subscription or trick you into something you don't need. Malware.
the fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and/or credit card numbers.
CThe best way to avoid "Malware" is eduation and safe Internet practices. Any program that says it can help is usually a scam or the "Click Here" to "Read More" or "Login to your account" is usually a scam.
If any program is of any help, it is only after the fact by removing something that has already been installed. "Malware Bytes" is the only one I trust to help but it is also a after the fact repair. You can use it in demo mode and remove it after-words or pay the minimal annual dues which I do. It will not find and remove everything but it finds a majority of items.
The main reason any malware comes at you is to make money directly or Indirectly.