Viruses exist for Apple, they always will. Avast! is an extremely leight weight program for what it can do. I have NO issues running avast! on any of my systems on both Mac and Windows whatsoever.
Another thing to consider is. A virus and malware are two (2) different things. A VIRUS usually destroys your computer and doens’t make “profit” directly likr malware can. Malware seeks to make a major profit. An example is the Bitcoin Trojan. It “mines” bitcoins for profit for the owner. The only malware/virus that is the border of both is Cryptolockers which can destroy your computer if you don’t pay a ransom. Avast! or some other type of AV is needed to protect your computer. Ignorance of these facts is going to land you in Malware City.
I think there’s some confusion on what malware and viruses are.
Malware is the general category of malicious software and includes viruses. Nowadays anti-viruses are actually anti-malware, and it’s generally preferred to always refer to malware instead of viruses, viruses are in fact very rare.
Being ‘for profit’ is not part of neither definitions.
Malware, short for malicious software, is software used to disrupt computer operation, gather sensitive information, or gain access to private computer systems.[1] It can appear in the form of code, scripts, active content, and other software.[2] 'Malware' is a general term used to refer to a variety of forms of hostile or intrusive software. (...)
Malware includes computer viruses, ransomware, worms, trojan horses, rootkits, keyloggers, dialers, spyware, adware, malicious BHOs, rogue security software and other malicious programs; the majority of active malware threats are usually worms or trojans rather than viruses.
I hope that clarifies.
The most useful part of avast on the mac is actually the web protection, and actively blocking malicious sites, this is the major attack vector, and takes advantage of browser vulnerabilities still unpatched.
If I may make a comment on this…consider this …that any devise that connects with the internet can get infected and unless it has an appropriate protection program on it how can the owner know if it is infected ? I suggest that the first thing you will know of the infection is when you get site redirects or people accusing you of infecting them with emails or it refuses to connect to the internet because that connection has been wiped out by the infection you did not know you have .
I think others above have also said that no machine is immune from infections just because of the OS it happens to have on it .
As far as I am aware it is the Windows OS that is majorly targeted as it is the major OS out there but that is not to say that those who wish to can and will target the other OS’s
Malware does exist on OS X, it’s just that hackers or whatever, don’t target OS X as much as Windows just like snowflake1 says. I just keep Avast! just in case.
Everybody should have antivirus prog installed, even if they have OS X.
It is the ignorance (or perhaps arrogance) of Mac (and Linux) users that keeps viruses in the wild.
Even if your system can not be infected, you should contribute to keeping things clean everywhere. Install now.
If you think Avast is not good, try something else. But do install antivirus.
Have OS X with Avast, have Win XP/Vista/7 with Avast, have Android with Avast.