Avast is an excellent – and free – solution for Android. We would choose a different option on Windows or Mac. Avast Internet Security is the basic version, a step up from the Avast Free Antivirus. However even this basic level software packs a lot of utilities. Avast’s support was responsive and helpful when I had an issue connecting my online account with my software, and the help and documentation on the website is very well laid out and clear.

• Pros

  Certified by one independent testing lab. Speedy full scan. Excellent phishing protection for Chrome and Firefox. Useful bonus features. Ransomware protection. Wi-Fi intruder detection.

• Cons

  Doesn't add much to free edition's features. Expensive. Poor phishing protection for Safari. Password manager includes only basic features.

• Bottom Line

  Avast Security Pro (for Mac) adds ransomware protection and Wi-Fi intruder detection to the features found in Avast's free antivirus, but these additions don't merit its high price.

The myth that Macs can't suffer viruses, Trojans, or other types of malware attack is busted. Oh, the situation isn't nearly as bad as on Windows or Android, but Macs really do need antivirus protection. There are free options available, including Avast Security (for Mac), but commercial antivirus utilities offer more features and do better in testing. Looking at what this product adds beyond the features in the free edition, it's really hard to justify the price.

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This product's main window looks exactly like that of the free edition, except for the absence of the upgrade offer. Plenty of white space surrounds a simple security status indicator. The left-rail menu is also the same as in the free edition. The difference is that clicking Ransomware Shield or Wi-Fi Inspector brings up the component, rather than displaying an upgrade invitation. The look is very different from that of Avast Pro Antivirus, which uses a dark gray background with occasional elements in purple and green.

Pricing and OS Support

Like Bitdefender and Kaspersky, Avast supports macOS versions back to 10.9 (Mavericks). If you have an antique Mac that for some reason can't even run Mavericks, consider ESET, ProtectWorks, or ClamXav—all of which support versions of macOS from 10.6 (Snow Leopard) on. At the other end of the spectrum, Avira, Trend Micro, and Symantec Norton Security Deluxe (for Mac) require macOS 10.11 (El Capitan) or better.

The most common pricing plan for Mac antivirus runs $39.99 per year for one license or $59.99 for three. Bitdefender, ESET Cyber Security (for Mac), Kaspersky, and Malwarebytes all fit this profile. Price-wise, Avast is on the high end, at $59.99 per year or $69.99 for three licenses. That's expensive, considering that the free edition has all the same features except for Ransomware Shield and Wi-Fi Inspector, which I'll detail below.

Shared Features

This utility shares all the features of the free Avast Security (for Mac), and that's saying a lot. I'll briefly summarize those shared features here, and you can should read my review of the free product for more details.

AV-Comparatives certified Avast's Mac malware protection as effective. In testing, it protected against 99.9 percent of Mac malware and 100 percent of Windows malware. AV-Test Institute, the other major lab that tests Mac antivirus, did not include Avast in testing. Note, though, that Bitdefender and Kaspersky earned 100 percent in both tests, and received certification from both labs.

I don't have the same kind of resources for antivirus testing under macOS as I do for Windows. I did try scanning a folder containing my current collection of Windows malware. Avast detected and quarantined 85 percent of the samples, which is quite good. Only Webroot SecureAnywhere Antivirus (for Mac), with 86 percent, and Sophos, with 100 percent, have done better. At the low end, McAfee caught 25 percent and Intego just 18 percent.

Avast's full scan finished in 14.5 minutes, which is quite a bit faster than the current average of 24 minutes. The impressive Home Network Security Scanner took less than three minutes to take note of all devices on my network. It found 36 devices and flagged legitimate security problems on two of them.

Phishing websites masquerade as secure sites in the hopes of fooling you into giving away your login credentials. It doesn't matter which browser you use, or which operating system. Avast's scores in my hands-on phishing protection test were extremely poor. The phishing protection systems built into Chrome, Firefox, and Internet Explorer all outperformed Avast, by a long shot.

I learned from my company contacts that phishing protection is fully functional in Chrome and Firefox, but only partly in Safari. The developers are working up a browser-independent version. In a new test using Chrome, Avast scored better than any Mac product except Bitdefender. It tied with Norton and beat out all three browsers. If you're relying on Avast for phishing protection, make sure you use Chrome or Firefox.

The Online Security browser extension marks up search results to flag dangerous links. It also displays a list of all ad trackers and other trackers on the current page, with an option to actively block these. Kaspersky Internet Security for Mac includes a similar active Do Not Track feature.

Avast comes with a basic password manager that installs as a separate application. It handles basic functions like password capture and replay, saving secure notes, and generating strong passwords. The app stores passwords locally, but you can set up syncing between all your macOS, iOS, Windows, and Android devices. However, you won't find any advanced features like secure password sharing, two-factor authentication, or password inheritance.

Ransomware Shield

Everything I've described to this point is also available in the free edition. The premium-only Ransomware Shield component simply prevents unauthorized access to files in sensitive folders. By default, it protects the Documents and Pictures folders for the current user. Naturally, you can add other folders if needed. A similar feature in Bitdefender Antivirus for Mac also protects your Time Machine backups.

To test this kind of access control on Windows, I use a small text editor that I wrote myself, something that would never show up on a list of trusted applications. I don't have such a program for macOS, so I had to disable the feature that automatically trusts Apple and App Store applications.

Operation is very simple. When an untrusted program tries to modify a protected app, Avast pops up a warning. If you've just installed and launched a new photo editor, click Allow. If you don't recognize the program, click Block. Note that clicking Allow only makes the program trusted temporarily. To ensure that new photo editor doesn't get blocked, you must manually add it to the list of Allowed Apps.

This type of access control is an effective tool for ransomware protection, one used by many security tools both on Windows and macOS. However, it does require vigilance on your part. When you see the Ransomware Shield popup, examine it carefully, and only click Allow if you're absolutely sure the program is legitimate.

Wi-Fi Inspector

As noted, you get the Home Network Security Scan even in the free edition. The premium edition adds a component called Wi-Fi Inspector. Despite the name, the main function of this component is to alert you when new devices join the network. It maintains its own simple list of devices. If you click Deep Scan, it launches the Home Network Security Scan.

Wi-Fi Inspector's device list doesn't identify security issues the way the security scan does. On the plus side, it lists the MAC address and IP address for each device, along with the name. For many devices, the name is a clear identification, like neils-ipad or all-in-one-pc, but some come out with names like unknown6542990b6483. If you have basic network skills, you can use those addresses to figure out which device corresponds to a weird name. Bitdefender Home Scanner (a Windows utility) lets you edit such entries to give them a friendly name, and even remembers the name on subsequent scans. With Avast, you'll just have to keep a list of which device matches which weird name.

I did encounter a serious problem with the device list. It found 36 devices on my network, but I couldn't scroll down to see more than the first bunch of devices. My Avast contact confirmed this as a bug. It's not such a big problem, as you can see all your connected devices in network scanner.

The real point of Wi-Fi Inspector is to alert you when a new device connects. Just after installation, you'll probably see quite a few of these, as devices that were turned off during the initial scan wake up. Once you get past that shakeout period, you should pay close attention to the new-device notifications. If you don't recognize the device, it could be a neighbor mooching your Wi-Fi, or even a hack attempt.

If you determine that the new connection isn't legitimate, there's not a lot you can do about it. Wi-Fi Inspector offers notification, but no direct way to act on that information. Your best bet is to snap a screenshot of the notification and then find a friend who's a network whiz. Your buddy can use the info from the screenshot to log into your router's settings and ban the device from the network.

Doesn't Add Enough

Avast Security Pro offers certified Mac malware protection, a network security scanner, and a password manager, but those features also come with the free Avast Security. The Pro edition adds ransomware protection that works by banning untrusted applications from modifying your files. It also adds real-time notification of new connections to your network, but offers no way to do anything if you determine the new connection is perfidious. That's not much for $59.99 per year. The only reason to buy this product is if you want to protect your Macs in a business setting, but in that case, you can get better protection for less.

Bitdefender Antivirus for Mac has certification from two labs, excellent phishing protection, an anti-ransomware feature much like Avast's, and more. Kaspersky Internet Security for Mac also has two certifications, and it comes with a full parental control system, excellent anti-phishing, protection against webcam peepers, and more. These are our Editors' Choice products for macOS antivirus, and they both costs $20 less than Avast.

Bottom Line: Avast Security Pro (for Mac) adds ransomware protection and Wi-Fi intruder detection to the features found in Avast's free antivirus, but these additions don't merit its high price.

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avast! Free Antivirus for Mac version 9

• Pros

  Certified by one independent testing lab. Free. Speedy full scan. Network security scanner. Password manager. Website rating. Active Do Not Track.

• Cons

  Poor scores in phishing protection test. Password manager includes only basic features. SiteCorrect feature did not work in testing.

• Bottom Line

  Avast Security (for Mac) delivers effective malware protection along with unusual bonus features. It tanks our antiphishing test, but this free utility is still worth a look.

For years, Mac users basked in the mystique of virus-free computing. It wasn't true, alas, and as time goes on we see more and more Mac-specific malware attacks. The situation may not be nearly as bad as for Window or Android, but prudence still dictates that you install antivirus protection on your Macs as well. Avast Security offers Macs protection against malware along with advanced features including a password manager and a network security scanner, all for a cost of exactly nothing.

Installation went quickly, though I did find I had to separately activate the password manager and the Online Security browser extension from the Tools page. You'll also find Avast's SecureLine VPN on that page, but it's not free like the others. When you click to activate, you get a choice of signing up for $2.99 per month or starting a 30-day trial.

The product's spacious main window features a large status indicator centered in an otherwise-empty white region, with a menu down the left side. It's a very different appearance from Avast Free Antivirus on Windows, which uses pops of purple and green on a dark gray background.

Pricing and OS Support

Like Bitdefender and Kaspersky, Avast supports macOS versions back to 10.9 Mavericks. If you have an antique Mac that for some reason can't even run Mavericks, consider ESET Cyber Security (for Mac), ProtectWorks, or ClamXAV (for Mac) all of which support versions from 10.6 (Snow Leopard) on. At the other end of the spectrum, Avira, Trend Micro, and Symantec require macOS 10.11 (El Capitan) or better.

Like Sophos and Avira, Avast offers full antivirus protection for free. Avast Security Pro (for Mac) costs $59.99 per year for one license or $69.99 for three. The Pro edition adds ransomware protection and real-time notification when new devices connect to your network. The free edition is strictly for non-commercial use; in a business setting, you must pay up.

Good Malware Protection Scores

When reviewing a Windows antivirus utility, I report how it scored with four independent antivirus testing labs. The very best products earn top scores from all four labs. But even if no test results exist, I can run my own hands-on tests using real-world malware and malware-hosting URLs.

It took years to develop my hands-on tools and tests for Windows. Most of them don't carry over to the macOS platform. Hence lab results become extremely important for my Mac antivirus reviews. Two of the labs I follow, AV-Test Institute and AV-Comparatives, test Mac antivirus, and Avast participates with one of them.

Experts at AV-Comparatives test Mac antivirus products using the latest macOS malware. They also evaluate each product's ability to detect Windows malware. Why? While a Trojan written for Windows wouldn't run on a Mac, the Mac could serve as a carrier.

Avast managed 99.9 percent protection against Mac malware. That's very good—better than most. However, Bitdefender and Kaspersky exhibited 100 percent protection. In the Windows malware test, Avast detected 100 percent of the samples. Most competing products also took 100 percent. However, Webroot only caught 75 percent, and Intego Mac Internet Security X9 got just 18 percent. Like most tested products, Avast received certification from AV-Comparatives for Mac antivirus protection.

Having one certification is good; having two is better. Bitdefender, Kaspersky, and Sophos are among the products that received certifications from both labs for Mac malware protection.

Scan Choices

Avast offers several scans to improve your Mac's security. A full scan on the Apple MacBook Air 13-Inch that I use for testing took 14.5 minutes, just a hair over Intego's 14 minutes, and quicker than the 18 minutes required by Avira. The average for recent products is 24 minutes, so Avast proved quite speedy. Norton is the current speed champ, completing a full scan in 10 minutes.

There's a separate scan for removable volumes, though you can configure the full scan to include them. I scanned a thumb drive containing my Windows malware collection and found that it quarantined 85 percent of them. For comparison, Avira detected 82 percent of these, while Sophos Home (for Mac) wiped out every single one.

There's no predefined quick scan, which makes sense given the speed of the full scan. The custom scan settings confused me, though. As with the full scan, you can add file locations to exclude from scanning, and configure it to scan Time Machine backups. But the full scan's settings include those options, and also let you include removable volumes and network volumes, while the custom scan's settings do not. Puzzling.

You can schedule a daily, weekly, or monthly scan if desired. Settings for a scheduled scan include two additional choices. You can set it to skip scanning if your device is running on batteries, and you can have it wake from sleep if necessary, to perform its scheduled scan. Avira Free Antivirus for Mac not only offers scheduled scanning, it defaults to a weekly scan with no effort on your part. Sophos skips scheduled scanning, relying instead on real-time protection.

Network Security Scan

The final scan choice doesn't look for malware. Rather, it collects information about all the devices on your network and flags any security problems. On my own network, the scan finished in just under three minutes.

The scanner correctly reported that my main router has an open port that could theoretically become a point of attack. It's true that the port is open, as my ISP uses it to run remote diagnostics when necessary. But that function requires a key that only the ISP has.

Norton Internet Security For Mac

More interestingly, it found serious problems with a network storage device (fortunately, one that I'm not currently using). Not only does this device have numerous open ports, it's vulnerable to a buffer overrun attack. Avast advised updating the firmware; I just unplugged it.

The report also serves as a list of everything that's connected to your network, identifying each by name and type. It's similar to the output of Bitdefender Home Scanner. With both products, I found devices with names like unknown6542990b6483—not much help! Bitdefender includes an option to edit the name and type, and it remembers your edits in subsequent scans. I'd like to see that ability in Avast.

Excellent Phishing Protection in Chrome and Firefox

In the Windows realm, one thing that differentiates Avast's premium product is better protection against phishing sites, those fraudulent sites that imitate secure sites and try to steal your login credentials. The free Windows edition scored very poorly, while the premium edition did an extremely good job. Based on initial round of testing, the Mac product's phishing protection, both free and Pro, seemed to match that of the free Windows product, meaning it's not very good.

I learned later that Avast's phishing protection is not fully functional in Safari. The developers are working on making it completely browser-independent. In the meantime, they advise using Chrome or Firefox. Norton was also having problems during my original test, so I tossed those results and started fresh.

My phishing protection test uses URLs reported as fraudulent, but not yet verified. Typically, these are only a few hours old. That's important, because phishing sites are ephemeral. Once they've been identified and blacklisted, the fraudsters just create new ones.

I simultaneously launch each URL in Safari on the Mac and in a browser protected by long-time antiphishing champ Symantec Norton Security Premium. I also launch each in Chrome, Firefox, and Internet Explorer, relying on the browser's built-in protection. If any of the five browsers throw an error message, I discard the URL. A true phishing fraud masquerades as a secure site and tries to capture your login credentials. Any URL that doesn't match that profile also gets junked.

I've written a Windows-based tool that handles launching URLs and capturing results. On the Mac, I copy and paste each URL into Safari and manually record the result. When I have enough data, I dump the five reports into Excel for comparison.

The malefactors that perpetrate these phishing frauds are clever. They're always devising new techniques to get past security software. That being the case, I report results not as hard figures but as the difference between the product under test and the others.

Tested using Safari's incomplete phishing protection, Avast's detection rate lagged Norton's by 32 percent, and Norton itself was having a bad day. All three browsers soundly drubbed Avast. When I retested using Chrome, Avast tied with Norton and beat the detection rates of the three browsers. That's impressive. Of the Mac security products I've tested, only Bitdefender did better, beating Norton by 5 percentage points.

While phishing is browser-agnostic, phishing protection is not. Bitdefender beat Norton by 5 percentage points, but its Windows cousin more than doubled that gap. Even Symantec Norton Security Deluxe (for Mac) didn't detect many frauds that its Windows edition caught.

Site Rating and Do Not Track

Like McAfee AntiVirus Plus (for Mac), Avira, Trend Micro, and several others, Avast marks up results in popular search engines with green for safe, red for dangerous, and gray for unknown. You can click to vote a page up or down. Simple!

Avast For Mac

Clicking the Online Safety toolbar button displays the status for the current page. It also lists all the elements on the site that can track your online activity, including analytics, social media, ad trackers, and more. By default, it doesn't do anything, but you're free to block any tracker or category. Websites are free to ignore the official Do Not Track header sent by your browser, but Avast's active Do Not Track feature has teeth. Kaspersky Internet Security for Mac offers a similar active Do Not Track feature.

Digging into the settings for Online Safety reveals a hidden gem: SiteCorrect. If you mistype a site name, this feature offers to change to the correct name. You can even set it to automatically make the fix, with no prompt. However, in testing, I couldn't tease it into action. I tried pyapal.com, pcmga.com, whitehous.gov, wallmart.com, and many others, with no reaction from SiteCorrect.

Basic Password Manager

Like Avast's Windows antivirus, this product includes a password manager. Where the Windows product invites you to install on Android, the Mac one suggests adding password management to your iPhone. On Windows, the password manager is integrated with the antivirus; under macOS, it's a separate app.

There's no limit on the number of devices, and you can sync your passwords between them all, macOS, Windows, iOS, and Android. Avast doesn't keep your passwords in the cloud. Rather, it uses your Avast account to authorize syncing data that's stored locally on your devices.

Once you've enabled syncing on a device, that device becomes an authenticator for adding more devices. The new device displays a numeric code, and the existing device gets a notification with the same code. If the numbers match, just click to approve. What if you lose all your devices? On installation, Avast sends an email with a recovery link; don't lose that email!

On each of your devices, you create a master password to protect the local password stash. The master passwords need not be the same, but who'd want the confusion of making them different? Avast offers advice on creating a strong password, with a color-coded line representing the strength of what you've typed. It's not easy to get all the way to green, but Avast doesn't require it. In fact, it accepted 'Password' as a master password.

Avast offers browser extensions for Chrome, Firefox, and Safari. When you log in to a site, the extension offers to save your credentials. If you come back to the site, it fills your saved credentials. Clicking the key icon in one of the fields brings up a menu showing all the credentials you've saved. And it handles two-page logins like what Google uses.

Avast doesn't use the typical menu of logins attached to its toolbar button. Rather, you click the button and launch the main application. Unlike the Windows edition, this is a separate app, not integrated with the main antivirus. Its main window is seriously tall and skinny, like something you'd find on a smartphone, and you have only limited control over its size. Clicking an item opens its details, with a link to open the site itself.

You can also use the password manager to sync and share secure notes between your devices. These are simple, unformatted text snippets, suitable for saving such things as locker combinations and non-digital passwords.

The left-rail menu offers simple icons to manage passwords and secure notes, and one to bring up the password generator. By default, it generates 18-character passwords using all character types. You can set the length anywhere from four to 30 characters using a slider.

Avast analyzes the strength of your master password when you first create it, but not when you update it. Avast Pro Antivirus on Windows can analyze your passwords, flagging any weak or duplicate ones. The free Windows edition used to include this feature, but it was recently enhanced and redefined as a Pro-only feature.

This password manager handles all the basic tasks and no more. Fancy features like secure sharing, two-factor authentication, and password inheritance aren't here. But you do get it along with the antivirus, at no charge, so if it does enough for you, go ahead and use it.

Avast Mac Security Free

Worth a Look

AV-Comparatives certified Avast Security as an effective Mac antivirus. Impressively, it offers a network scanner and password manager, features often reserved for full security suites. On the other hand, the password manager handles basic functions only—nothing advanced. And while Avast earned great stores in my hands-on antiphishing test, that function currently works well in Chrome and Firefox, but not Safari. But the pros outweigh the cons. If you're looking for free Mac antivirus protection, give it a try, along with Sophos and Avira, and see which you like best.

For truly top-notch Mac security, you'll need to lay out some cash. Our Editors' Choice products in this realm are Bitdefender Antivirus for Mac and Kaspersky Internet Security for Mac. Both received certification from two labs. Both scored well in our hands-on antiphishing test. Bitdefender's AutoPilot mode means you can set it and forget it. And Kaspersky goes above and beyond feature-wise, with full-scale parental control, protection against webcam peeping, a network attack blocker, and more.

Avast Download For Mac

Avast Security (for Mac)

Bottom Line: Avast Security (for Mac) delivers effective malware protection along with unusual bonus features. Phishing protection only works well in Chrome and Firefox, but this free utility is still worth a look.