what is the best antivirus for my mac?

I'm not sure what you are referring to, but nothing in this conversation is going to help you with your iPhone. There is no real anti-malware software for iOS devices. They have much tighter security mechanisms in place than OS X to prevent individual apps from accessing each other's content and data. As such, there is currently no antivirus software needed for the iOS platform.

If you haven't already done so, describe your issue in depth in the iPhone Forum.

You really shouldn't need it, to help prevent from getting any malware or viruses I like to run adblock on chrome and occasionally run Malwarebytes. Its also important that you keep everything up to date so that your security definitions are current.

In short just be smart about your web use, don't click on ads, dont allow remote access, if you need to download something do it from a trusted website.

It has been my experience when called in to assist with problems on a Mac that all of the AV software recommend in that article once uninstalled from the Mac caused all of the problems on the Mac to go away. I strongly recommend against all of them.

The results shown in that article are out-of-date, but at least the link to AV-Test.org shows the latest July 2017 results.

A couple of my colleagues attempted to do independent testing of their own, but both threw in the towel when they found how difficult it is to do fair testing of all aspects of A-V technology. I don't agree completely with the way AV-Test conducts there testing, but it is better than others tend to be. Some outfits accept payments and even advertising in order to get a favorable rating.

Note that the US Department of Defense has currently banned the use of all Kaspersky software products.

Allan certainly makes a valid point of how intrusive such software can be either by it's nature or by how it's been setup by the user. If you feel you must use it, pay particular attention to the impact scores.

OS X / macOS provides adequate protection for most users and educating yourself on how to avoid the rest is often a better solution.

None. There is no need for additional antivirus software. Most commercial antivirus software is junk and some of it is harmful.

None. You really, really don't need any.

MacKeeper is better known as malware. Do not go anywhere near it.

Uninstalling MacKeeper is not trivial.

It is bad. Do install it. All it will do for you is cause your Mac to have problems.

I prefer to call it scamware especially after the way Zeobit advertises it.

Allan

MacKeeper is a really nasty "anti-virus" program. I have never run it myself, knowing it's bad, but this thread should answer your question:

https://discussions.apple.com/thread/3057579?start=0&tstart=0

As others have said, stay away from Mac keeper.

So far, there has really been no need for Mac anti-malware products. However, I don't want to be stuck wondering what happened if a serious Mac threat comes out.

http://www.clamxav.com/ is worth considering. It could be that OS X continues to not be a focus of malware attacks, and I am not suggesting that there is impending doom. I guess I just don't want to be caught totally unprepared *IF* there is a sudden malware attack aimed at OS X.

No problem 🙂

Some suggestions for you: In Safari Preferences, uncheck "open 'safe' files after downloading".

I believe it is checked by default. Un-check it. This gives you a measure of protection against apps that automatically open after downloading. Malware exists but you have to install it, and you have to supply an Administrator name and password to do that. Nothing can save you if you come across a dubious website offering "iLife 11 full install!!!" and you install it with your name and password. You'll get what you deserve.

Become knowledgable about phishing. Mac OS X has built-in warnings about phishing sites but there is nothing to stop someone from asking personal information. Phishing a modern version of a confidence game that's been around for thousands of years. Nothing can stop it except your own common sense.

Ignore pop-ups that offer to sweep your system for viruses, or that it has already been infected by whatever. These are phishing attempts or offers of malware. Select "block pop-up windows" in Safari's menu.

Download and install ClickToFlash. This intercepts Flash content before it can bog down your system. Flash isn't intended to be malware, but it can act that way.

Run Software Update periodically. This will ensure your system has the latest security updates.

Read more: http://www.apple.com/macosx/what-is/security.html

For a thoughtful, balanced discussion of the few malware threats that do exist on the Mac and how to avoid them, read:

http://www.reedcorner.net/guides/macvirus/