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The best Mac antivirus software 2018



Welcome to our list of the best Mac antivirus software in 2018. Despite what some people claim,  Mac viruses do exist, but it’s very hard for them to spread. OS X and macOS are based on the Unix operating system, which is sandboxed. That means it’s very difficult for viruses to do any damage. Think of them as locked in a little box from which they can’t escape no matter how hard they try. 

Not only is a Mac much more difficult to hack or compromise than a Windows PC, but the relative obscurity of Macs means that even if a criminal does find a vulnerability to exploit, it’s a lot more effort to attack far fewer computers. That means Macs benefit from security by obscurity; the baddies target the more common and potentially lucrative Windows machines instead.

However, you should be careful not to get complacent if you own a Mac, as viruses and security risks are increasing, so it is wise to consider buying antivirus software for your Mac. Read on for our top choices.



Mac antivirus: which is best at detecting threats?

The excellent AV-TEST regularly puts anti-virus programs through their paces, and their most recent tests took place in July 2017 on macOS Sierra. They tested two key areas: how well the packages detected Mac-specific threats, and how well they protected against Macs in mixed-OS environments being hijacked to spread Windows malware.

For Mac malware, four packages achieved 100% detection without false positives:

The next four achieved between 99.5% and 98.4% without false positives:

The worst performer was MacKeeper, with 85.9% detection.

In mixed operating system environments, five programs achieved 99% detection of Windows threats:

Mac antivirus: what’s the effect on performance?

Most of us believe that anti-virus software has a negative effect on performance, but chances are it’s much less negative than we think: in their tests, AV-Test found that there was no measurable performance drop when using ClamXav, MacKeeper, Kaspersky or Norton. There was a measurable difference with Sophos and Trend Micro (2% of additional system load), and with ESET and Bitdefender, which added around 4% to the overall system load.

If you don’t want to spend money, go for AVG: it achieved 100% detection in AV-TEST benchmarks. However, AV-TEST did point out that unlike paid-for products, AVG had a significant effect on system performance, taking around 10% of system resources.

Of the paid-for products, AV-TEST recommends Kaspersky Lab and Norton, noting that they deliver 100% detection with no noticeable effect on performance.

Bitdefender and Trend Micro are highly recommended too, as is Intego – albeit with the caveat that it can increase system load by 16%.

AV-TEST recommends Kaspersky’s antivirus suite, which gives excellent protection without a noticeable effect on system performance

Mac antivirus: do I really need it?

That really depends on you. The risk of infection remains pretty remote, and if you practice basic security measures and don’t fall for common scams then you’re very unlikely to suffer from any problems. Even ransomware can be defeated with the cunning tactic of having a backup of anything important. 

That said, if you’ve ever experienced the mess malware can make on a Windows system you’ll know that just getting things back to normal can be an incredible time thief, especially if key data has been damaged. Perhaps the question shouldn’t be whether anti-virus is worth the money, but whether your time is more valuable than the cost of a security app.



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