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The best Mac antivirus software in 2021

Best Mac antivirus
(Image credit: Avast)

Attention Mac users: You need one of the best Mac antivirus programs on your machine.

Macs do get infected, despite Apple's claims of years past. Mac malware has increased in the past few years, and today's Macs are also plagued by adware, scareware and other potentially unwanted programs.

Unfortunately, Apple's built-in antivirus protections, including Gatekeeper and XProtect, don't always work so well. The best Mac antivirus programs do better, quickly spotting brand-new malware and double-checking dodgy files "signed" with an Apple developer ID.

Many Mac antivirus programs also check for Windows malware, which can infect nearby PCs. Some Mac antivirus programs come with useful extras such as password managers, system optimizers or VPN services.

The top 3 best Mac antivirus brands

1. Bitdefender has the best antivirus for Macs

1. Bitdefender has the best antivirus for Macs
Bitdefender Antivirus for Mac combines great malware protection with a barely noticeable system-performance impact.

2. Norton has the best feature set

2. Norton has the best feature set
Norton 360 Standard includes a password manager, unlimited VPN data, a firewall and Dark Web monitoring, features you don't often see with Mac antivirus software.

3. Avast offers the best free Mac antivirus

3. Avast offers the best free Mac antivirus
Avast Security for Mac may cost nothing, but it doesn't cut corners. Its malware protection is top-notch, its system impact is minimal and it has dialed back the annoying ads upselling you to a paid version. 

What is the best Mac antivirus program?

We think Bitdefender Antivirus for Mac is the best Mac antivirus program you can buy. It had nearly zero impact on system performance in our own tests, caught all Mac and Windows malware in lab tests, rolls back files encrypted by ransomware and hardens your web browser against online attacks. It also offers 200MB of VPN data daily, although that's just a tease for the unlimited VPN service.

Latest Mac & iOS alerts and threats

Powerful Mac malware can install more programs and take over your system, warns Microsoft.

— You can be physically tracked using Bluetooth signals from phones, laptops and watches, researchers say.

Apple patched a zero-day flaw affecting iPhones and iPads, so make sure you update now.

Close behind is Norton 360 Standard, which has even better malware detection plus an unlimited VPN and a password manager. Norton catches all Mac and Windows malware, has a very small system-performance impact and includes LifeLock dark-web monitoring.

Our favorite free option is Avast Security for Mac, with nearly perfect malware protection and an easy-to-use interface. Its system-performance impact is less than it once was, and it no longer nags you to upgrade to paid Avast products.

Kaspersky Internet Security for Mac has perfect malware-detection scores, webcam protection and a hardened web browser. It offers 300MB of daily VPN usage, but its password manager and parental controls are also limited unless you pay more.

There's not much wrong with Trend Micro Antivirus for Mac, except for a rather heavy system-performance impact during full scans. It shields files from ransomware, protects your webcam and very good malware protection. Yet it doesn't do much to stand out from the crowd.

Intego Mac Internet Security X9 comes from the granddaddy of all Mac antivirus companies, and its detection and protection skills are very good. But it's got a relatively sparse set of tools and features that resemble those of free antivirus apps.

Sophos Home Premium is a hidden gem. It has few extra features, but protects your Mac's webcam and has web filters for children and dedicated protection against ransomware. You can protect up to 10 Mac or PCs for a bargain price.

McAfee Antivirus Plus is also an inexpensive 10-device bundle protecting Macs, PCs and Android devices. But it's got few extra features for Mac and its scans can create large system slowdowns. Its Mac malware protection performs a notch below those of Bitdefender and Sophos.

Malwarebytes for Mac Premium has never had malware-detection lab tests, but Malwarebytes' Windows consumer antivirus software does not do well. However, we can recommend the free Malwarebytes for Mac, an excellent cleanup tool that's the perfect complement to good Mac antivirus software.

The best Mac antivirus software you can get

Best Mac antivirus: Bitdefender Antivirus for Mac

(Image credit: Bitdefender)

1. Bitdefender Antivirus for Mac

The best antivirus program for Macs: light, fast, strong and easy to use

Reasons to buy
+Very good malware detection+Ransomware protection+Modern, intuitive user interface+Light system impact
Reasons to avoid
-Lacks some features Windows version has

Bitdefender Antivirus for Mac has an easy-to-use interface, affordable pricing, nearly flawless malware detection and a very light system-performance impact. For those reasons, it's once again our Editor's Choice for best Mac antivirus software.

Unusually for a Mac antivirus program, Bitdefender can roll back ransomware encryption, including on Time Machine backups. It also offers extensions to harden your web browser and blocks online trackers to protect your privacy. The Autopilot and Bitdefender Shield features keep the software running without much human intervention.

The only downsides are the absence of the password manager that comes with the Windows version of Bitdefender Antivirus, and that the Bitdefender VPN service is limited to 200MB per day unless you pay more. Other than that, it's a nearly perfect Mac antivirus program.

Read our full Bitdefender Antivirus for Mac review.

Best Mac antivirus: Norton

(Image credit: Norton)

2. Norton 360 Standard

The best feature set among Mac antivirus programs, including unlimited VPN service

Reasons to buy
+Flawless malware detection+Massive feature set. including unlimited VPN and password manager+Almost no impact on system performance
Reasons to avoid
-Expensive for a single license-Parental controls, cloud storage don't work on Macs

Norton 360 Standard has a ton of useful extras, including unlimited VPN service and an unlimited password manager, two features for which its rivals make you pay extra. It's also got a two-way firewall, a system optimizer and dark-web monitoring of your personal data.

More importantly, Norton 360 Standard has a very small impact on system performance, always-available tech support and, last but not least, flawless detection of Mac malware.

You'll pay a lot for these luxuries, however, although you'll be saving money on the cost of a stand-alone VPN or password manager. We hope that Mac users will soon get the parental controls, webcam protections and backup software that Windows users of Norton 360 Standard already have.

Read our full Norton 360 Standard review.

Best free antivirus: Avast Free Antivirus

(Image credit: Avast)

3. Avast Security for Mac

The best free antivirus for Macs

Reasons to buy
+Excellent antivirus protection+Light system-performance impact+Screens out malicious websites
Reasons to avoid
-Limited features-Weak customer support

Avast Security for Mac has improved a lot since it was called Avast Free Mac Security. The malware-detection rate is now nearly perfect, the system-performance impact is much less and the annoying ads that tried to upsell you to Avast paid programs have been drastically dialed back.

Avast also screens websites for phishing scams and other common threats and scans your Wi-Fi network for outdated devices and unwelcome guests. Its interface is attractive and easy to navigate, but be aware that some of the features, including ransomware rollbacks, are available only to paying customers.

The password manager and the email-attachment screener have disappeared, however, and the tech support is limited to online documents. Still, if you want a solid, dependable Mac antivirus program for nothing, this is the one to get.

Read our full Avast Security for Mac review.

Best Mac antivirus: Kaspersky Internet Security for Mac

(Image credit: Kaspersky)

4. Kaspersky Internet Security for Mac

Flawless security in a flawed package

Reasons to buy
+Perfect malware detection+Hardened browser for banking, shopping+Webcam protection
Reasons to avoid
-Password manager, parental controls, VPN very limited-Noticeable background impact

Kaspersky Internet Security for Mac has perfect malware-detection rates, a light system impact during scans and an intuitive user interface. It can even turn off the webcam on a MacBook, a feature that Apple itself doesn't offer.

Kaspersky also offers a hardened web browser for use while banking or shopping online, plus browser extensions that block malicious URLs and tracking cookies and advise you to steer clear of risky websites.

However, the best extra features are just teases. The password manager holds only 15 items. The parental controls are limited to a single child device without location tracking. The VPN service gives you only 300MB of data per day. 

Unlimited versions of each cost $15, $15 and $30 per year, respectively, which isn't terribly expensive, but Norton 360 Standard gives you two of those at no extra costs.    At least Kaspersky doesn't persistently try to upsell you on them. 

Read our full Kaspersky Internet Security for Mac review.

Click here if you're in the U.S.

Solid Mac antivirus software
Kaspersky Internet Security for Mac offers excellent malware protection, useful privacy tools and a hardened web browser. 

Click here if you're in the U.S.
Click here if you're in the U.K. (or anywhere else)

Trend Micro Antivirus for Mac review

(Image credit: Trend Micro)

5. Trend Micro Antivirus for Mac

Excellent security without any standout features

Reasons to buy
+Nearly flawless malware protection+Affordable pricing+Light background performance impact
Reasons to avoid
-Outdated user interface-Heavy performance hit during full scans

Trend Micro Antivirus for Mac offers very good malware protection for a reasonable price, but it has a very heavy system impact during full scans.

If you can overlook that drawback, you'll find ransomware protection for designated folders, webcam protection, a social-media privacy scanner and even a parental web filter. Trend Micro's interface is a bit old-fashioned, but it works.

However, the program doesn't really stand out when rivals such as Bitdefender and Norton offer more. You could certainly do worse than Trend Micro Antivirus for Mac, but you could also do better.

Best Mac antivirus: Intego Mac Internet Security X9 review

(Image credit: Intego)

6. Intego Mac Internet Security X9

Amazing malware scanning speeds

Reasons to buy
+Solid malware protection+Blistering fast scans+Excellent legacy macOS support
Reasons to avoid
-Limited feature set-Disjointed user interface

Intego has been making Mac antivirus software since 1997, and its Mac Security X9 offers very fast scans, thorough malware detection and a full-fledged firewall. The program also supports legacy macOS versions going all the way back to 2013's Mavericks. 

Intego Mac Security X9 is a solid piece of software that does its job well, even if its user interface is a bit bare-bones. You can even toss in effective Windows antivirus protection for a small extra fee.

But Intego's relatively high price doesn't quite match its sparse feature set. While other paid Mac antivirus programs might toss in browser extensions, a password manager or even a VPN to justify the purchase, Intego's extra features aren't too different from what you'd get with free Mac antivirus software.

Read our full Intego Mac Internet Security X9 review.

Best Mac antivirus: Sophos Home Premium

(Image credit: Sophos)

7. Sophos Home Premium

Most cost-effective for large families

Reasons to buy
+Covers 10 systems+Ransomware protection+Parental website filters
Reasons to avoid
-Heavy background system impact-Untested malware detection

Sophos Home Premium can protect up to 10 computers, Mac or Windows, for a low price and its parental web filters can stop kids from seeing objectionable material online. It also has dedicated protections against ransomware and for your webcam and microphone.

Its background system impact is more noticeable than its competitors', although nowhere near the system impact of some Windows antivirus products. It's got a relatively small impact during active scans.

The interface is minimal and mostly lives in the menu bar; for more controls, there's a powerful online management tool. Tech support is 12 hours a day, Monday through Friday, and limited to email and chat interactions.

We just wish we had some third-party lab-test data about the efficacy of Sophos' Mac malware scanner, which might place it higher among the best Mac antivirus software programs.

Read our full Sophos Home Premium review.

Best Mac antivirus: McAfee Antivirus Plus

(Image credit: McAfee)

8. McAfee Antivirus Plus

Another bargain for large families, but fairly sparse on features

Reasons to buy
+Protects 10 devices+Low passive system impact
Reasons to avoid
-Unproven detection rates-Huge system slowdowns during full scans-Confusing interface

McAfee Antivirus Plus's generous 10-device license means you can provide antivirus protection for a whole family of Macs (and/or Windows PCs and Android phones) for a reasonable yearly fee.

But the program doesn't have a lot of extra features for Macs, which makes it hard to recommend for Apple customers. All Mac users really get is a firewall, while Windows users get ransomware protection, cryptojacking protection and a system optimizer. McAfee Antivirus Plus also has a heavy system impact during scans and a confusing interface.

Furthermore, we don't know really how well McAfee Antivirus Plus protects against Mac malware. There haven't been any recent Mac malware-detection testing scores for McAfee, so its protection powers are impossible to compare with those of the best Mac antivirus software.

Read our full McAfee Antivirus Plus review.

Best Mac antivirus: Malwarebytes for Mac

(Image credit: Malwarebytes)

9. Malwarebytes for Mac Premium

Stick to the free version, which works well with better AV software

Reasons to buy
+Easy-to-use design+Superfast scans+Low system impact
Reasons to avoid
-No special features-Untested malware detection

Despite its fast scans, light impact on system performance, and bright, easy-to-use interface, Malwarebytes for Mac Premium feels half cooked.

The program doesn't have many of the extra features its competitors offer, such as malicious-website blocking and email scanning. And because its malware-blocking skills haven't been evaluated in lab tests, we don't actually know how good Malwarebytes is at protecting your Mac.

However, we do recommend the free version, Malwarebytes for Mac. It is not truly antivirus software, but an excellent post-infection cleanup tool that also gets rid of the annoying adware and unwanted programs that antivirus software tends to miss.

You might want to let the two-week Malwarebytes Premium trial expire and instead use the free tier alongside some of the best Mac antivirus software.

Read our full Malwarebytes for Mac Premium review.

How to choose the best Mac antivirus software for you

Before you buy or install Mac antivirus software, you have to figure out what you really need. Do you have both Macs and Windows PCs at home? Then consider a multiplatform, multi-device bundle such as Norton 360 Deluxe, Sophos Home Premium or McAfee Antivirus Plus. Bitdefender and Kaspersky also offer multiplatform bundles that come with the same software we've reviewed here.

Or do you have only Macs? If so, no need to go overboard: The one- or three-device versions of Bitdefender Antivirus for Mac or Kaspersky Internet Security for Mac should do you just fine.

Do you have young children or teenagers living at home? Consider Mac antivirus software that comes with parental controls or web-content filters, like Kaspersky Internet Security for Mac or Sophos Home Premium.

Then figure out how much you can afford. If the answer is "nothing," then try Avast Security for Mac or the free tier of Sophos Home. The trade-off is that those aren't as good as many of the paid programs.

But if you can afford to spend $50 a year, then you've got a lot of options. Most of the antivirus companies frequently offer discounts of up to 60%, both straight from their websites or through online retailers, at least for the first purchase.

How we test the best Mac antivirus programs

To determine which of the above choices is the best Mac antivirus software, we evaluated ease of use, interface and performance impact. We installed each AV program on the same 13-inch 2016 MacBook Pro running macOS 11 Big Sur. It was powered by a 2.9-GHz Intel Core i5 processor and had 8GB of RAM and 42GB of data stored on a 256GB SSD.

We conducted our own tests based on how much each of the best Mac antivirus programs affected our laptop's performance. To do this, we used the Geekbench 5 benchmarking tool and ran it before installation of each antivirus program, then again after installation, once more during a full scan and then again during a quick scan.

We assessed how easy each of the best Mac antivirus programs was to use and the number of useful extra features it offered (including free add-on software). 

To gauge how effective each package was at stopping malware, we used the results of evaluations conducted by AV-Test, a well-regarded independent product-testing lab in Germany, and results from other tests conducted by AV-Comparatives, a similarly well-respected company in Austria. (Both labs also test the best Android antivirus apps.)

iOS antivirus apps

A lot of people want iOS antivirus software for their iPhones and iPads. The truth is that such software doesn't exist. Apple won't let third-party apps examine other iOS apps, or even inspect new apps as they're installed. Anything that claims to be antivirus software swiftly gets kicked out of the iTunes App Store.

Many major antivirus vendors, including F-Secure, McAfee, Norton and Trend Micro, do have "security" apps in the App Store. But these check web links for known malicious sites, locate lost devices or pretend to protect your privacy. None scans an iPhone for malware.

There has been real iOS malware that affects non-jailbroken devices, but it's very rarely cropped up. In each instance, Apple has pushed out a new version of iOS to stop the malware in a matter of days or weeks. Generally, if you keep your Apple mobile device updated to the latest version of iOS, you should be safe.

Paul Wagenseil

Paul Wagenseil is a senior editor at Tom's Guide focused on security and privacy. He has also been a dishwasher, fry cook, long-haul driver, code monkey and video editor. He's been rooting around in the information-security space for more than 15 years at, SecurityNewsDaily, TechNewsDaily and Tom's Guide, has presented talks at the ShmooCon, DerbyCon and BSides Las Vegas hacker conferences, shown up in random TV news spots and even moderated a panel discussion at the CEDIA home-technology conference. You can follow his rants on Twitter at @snd_wagenseil.