The free version ditches additional features such as privacy protection and safe payment sandboxes to concentrate on powerful, no-frills and - most importantly - free protection for your PC.
First things first: yes, your Mac needs virus protection. While malware that targets Macs isn't nearly as common as malware that goes after Windows, it does exist and is a growing problem.
Viruses specifically may not yet be the major concern for the Mac but there are many different kinds of malware to worry about: things like trojans, adware, ransomware, spyware, and lots of other dangerous wares so keeping your computer protected is smart.
Our advice? If you're not using an antimalware program for Mac yet, it's time! Below you'll find the 4 best ones we've found, any of which will keep your Mac safe from these growing threats.
If you're here because your Mac is already infected with some form of malware, try using a friend's Mac to create an emergency Mac OS boot device and then use that to download and install one of these antivirus apps to detect and remove the suspected malware.
Not on a Mac? Check out our updated best free Windows antivirus software and best free Android antivirus apps lists.
Avast Free Mac Security
What We Like
Detects several types of malware.
Blocks your computer from sending and receiving viruses in emails.
Able to minimize its impact on system resources.
Includes other security tools.
What We Don't Like
Some features only work in the pro edition.
Might take a while to install.
Avast Free Mac Security uses a traditional signature-based method to scan files on your Mac for known malware, Trojans, and viruses. Avast can root out rootkits and other methods that a hacker uses to gain control and is able to pry open compressed files to scan their content.
Beside malware designed for the Mac, Avast also looks for PC malware to help keep cross-platform infections from occurring. You don’t want to be the person sending off infected email attachments to your PC friends.
Avast uses real-time detection that runs in the background. Avast, like other antivirus apps that continually run in the background, can have an impact on your Mac's performance. Avast, however, gives you the option of using its real-time detection, or a scheduling system that can have less impact on your Mac's performance.
- Scheduled scans allow you to set the time for Avast for Mac to run its routine scans for the presence of malware. Moving the scheduled time to when it will least impact your workload is a big plus.
- File shield can check all of the files on your Mac for nefarious content. Files can also be checked by file type or location on your Mac.
- Web shield blocks unsafe websites from loading or downloads from those sites from occurring.
- Mail shield prevents dangerous email attachments from downloading or from being executed.
- Local network scan makes sure your home network and all connected devices are free from vulnerabilities that hackers could make use of to steal personal data.
Avast uses real-time detection that runs in the background. Avast, like other antivirus apps that continually run in the background, can have an impact on your Mac's performance. Avast, however, gives you the option of using its real-time detection, or a scheduling system that can have less impact on your Mac's performance.
Bitdefender Antivirus for Mac
What We Like
Easy to set up and forget about.
Finds malware automatically.
Includes lots of really great features.
Has a lightweight footprint.
What We Don't Like
The free version is limited in several important ways.
Bitdefender offers two security apps for the Mac a free Virus Scanner for Mac and the paid Bitdefender Antivirus for Mac. Both use the same Bitdefender engine for finding and removing malware, but Virus Scanner for Mac uses a manual approach to scanning your Mac, while Bitdefender Antivirus for Mac is loaded with features to make the process simple and, if you want to, as automatic as possible to ensure you are never the victim of a malware attack.
In fact, the Autopilot feature works so well that you can just about turn it on and forget about it, knowing that your Mac is protected from current and future threats from malware as well as ransomware, which is on the upswing in the hacking world.
- Time Machine Protection monitors your Time Machine backups and prevents ransomware attacks that may try to encrypt or remove your backups.
- Safe File allows you to specify folders that will be continuously monitored, preventing unauthorized apps from making changes to these folders.
- Adware removal can free your Mac from annoying ads, unwanted browser add-ons, and browser toolbars that may be added without your consent.
- Traffic Light browser extension works with Safari, Chrome, and Firefox to add advance phishing detection to your browser and warn you of dangerous websites.
Bitdefender makes use of traditional signature-based detection system as well as behavioral-pattern recognition. To help keep its database of devious malware types up to date, Bitdefender uses a cloud-based data collection system that stores the most recently detected Mac malware, adware, and ransomware information, allowing all Bitdefender users to have the latest updated detection system.
Malwarebytes for Mac
What We Like
It's always active and running to find threats.
Provides advanced options that can be tweaked to your desires.
Doesn't use up lots of memory or CPU.
What We Don't Like
The free version only works in manual mode (i.e., it can't catch malware automatically).
Malwarebytes for Mac has been a top choice for finding and removing Mac-based malware ever since its early appearance as Adware Medic.
Now under the guidance of Malwarebytes, the app retains its free ability to find and remove malware but has also expanded its capabilities to offer a premium paid version that can actively prevent Mac virus, spyware, and malware infections. It can also keep adware and unwanted apps from finding a home on your Mac.
- Detects and removes adware targeting Macs without requiring a separate browser add-on.
- Real-time protection can be disabled, allowing you to scan only when you wish.
- Includes an uninstaller for removing the Malwarebytes app.
- Low system overhead even with background scanning enabled.
Malwarebytes uses a signature-based system to determine the presence of Mac malware. The signature list can be updated as often as once per hour. Malware that is discovered can be automatically quarantined for easy removal at a later date.
Sophos Home for Mac
Avast Free Antivirus Features For Mac Version 9
What We Like
Provides real-time threat detection.
Identifies and removes various types of malware.
Includes unique features such as remote management.
Protects against web threats via filtering.
What We Don't Like
Avast Free Antivirus 2018 For Mac
Several features are not included in the free edition.
You must provide personal details to download the free version.
It has a relatively large setup file.
Sophos has been a leader in business-grade antivirus and security protection apps for PCs and Macs for years. Sophos brings the same business-grade security system to the personal Mac (there is also a PC version) user for free.
Sophos Home for Mac can protect every Mac in your home from malware, viruses, and ransomware. It also can protect your web browsing from stumbling across inappropriate websites that may contain phishing schemes or malware.
Sophos uses signature-based as well as heuristic-based behavioral detection to monitor the unusual behavior of apps to identify suspicious activity. Like most antivirus apps for the Mac, Sophos can detect Windows-based threats as well, helping to prevent cross-platform contamination.
Norton Antivirus Features
- Remote management allows you to monitor, configure and control Sophos Home on up to ten Macs or PCs.
- Parental controls can block viewing inappropriate websites while keeping a log of such web visit attempts for later review.
- Background scanning had a low impact on overall performance.
- On-demand scanning allows you to initiate a scan at any time.
Sophos runs primarily in the background scanning your Mac and detecting if malware or related threats are present whenever you download, copy, or open a file or folder. The scanner can also examine compressed files to make sure files contained within are safe.