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Antivirus software is a necessary tool in today’s online world. Attacks are only becoming more sophisticated, especially with the continued rise of AI. Even the most tech-savvy and cautious among us can drop their guard at wrong time or get tricked into exposing themselves to a malware, spyware, or ransomware vulnerability. Antivirus protection is an essential backup against such threats.
We’re not suggesting that PC security software is fool-proof, but it does a great job of protecting your computer against harmful malware and ransomware. Most systems come with security software baked into the OS, but this is often the bare minimum you need. Choosing to purchase more robust antivirus software will provide you with features such as an advanced firewall, sandbox environments for suspicious programs, and multi-device protection, among other things.
How do you choose a good antivirus? We’ve tested a multitude of offerings, including all the big names, so you don’t have to! When testing antivirus software, we look for products that strike a balance between excellent protection, a worthwhile selection of features, and minimal performance impact on your PC. For more information, you can read about how we test antivirus software below our picks.
Updated 12/21/23: Just in time for the new year, we’ve got three new reviews. Even after our completely fresh looks at Norton 360 Deluxe and AVG Internet Security, they’ve kept their spots among our top picks. We also examined McAfee+ Ultimate, and while it packs in an intense number of features, its lack of polish sadly holds it back.
Best antivirus of 2023 reviewed and ranked
Norton 360 Deluxe – Best antivirus for PC overall
Pros
- Strong antivirus protection
- Wide protection against major online threats
- Simple, straightforward features
Cons
- Performance impact on some PCs
- User interface would benefit from consolidation
- Upselling of additional services
Its dual user interfaces make Norton 360 Deluxe a little awkward to use right now, but its fundamentals are still the same—and that’s what keep this security suite in our top spot. Strong performance and a good number of extra features like VPN access, a password manager, cloud backups, and Dark Web Monitoring make for an overall excellent value.
Read our full
Norton 360 Deluxe review
Avast One – Best overall runner-up
Pros
- Good new design
- Well priced
- Excellent performance
Cons
- Smart scan requires too much user intervention
- Avast asks to install Google Chrome
Avast brings its A-game with this top-tier product. The Avast One suite offers an appealing design, excellent performance, and even more features to help offset its premium price. The individual plan covers five devices.
Read our full
Avast One review
AVG Internet Security – Best budget antivirus suite
Pros
- Top-rated antivirus protection
- Expanded protection against malicious websites and remote attacks
- Clean, straightforward interface
Cons
- Some PCs may experience a performance hit during heavier workloads
- Several features are a bit rudimentary
AVG Internet Security does a superb job of safeguarding your PC while offering a clean, straightforward interface and additional online protections. While it’s no longer as strong of a value as in previous years, it’s hard to beat this popular security solution on sheer value.
Read our full
AVG Internet Security review
Trend Micro Maximum Security – Best antivirus for beginners
Pros
- Mute Mode is an excellent feature for power users
- PC Health Checkup helps clean-up your PC
Cons
- Some of the privacy features didn’t work reliably
- Data theft prevention not as robust as it could be
Many antivirus suites create an interface that’s as simple as possible for users to understand—but sometimes the software becomes too stripped down. That’s why our recommendation for novices is Trend Micro Maximum Security.
This antivirus suite, which provides highly rated protection, strikes a nice balance between complexity and simplicity: Four category icons at the top let you dive deeper into the suite, but if all you need to do is a scan, that option is right there in the center of interface. You can’t miss it.
Overall, no matter what you need to get done in Maximum Security, the interface doesn’t leave you with any guesswork.
Read our full
Trend Micro Maximum Security review
McAfee Total Protection – Best for privacy
Pros
- Good protection
- Nice features like file shredder and home network analyzer
Cons
- Mixed impact on performance
- New app design is a little scattered
With its latest version, McAfee puts an emphasis on identity and privacy. While still offering its trademark malware protection, features like Identity Protection Service and a VPN for obscuring your online tracks, as well as app update checker address today’s added concerns.
Read our full
McAfee Total Protection review
Panda Dome Complete – Most feature-rich offering
Pros
- Very easy-to-understand mobile-like interface
- Contains some basic smart home network monitoring
- Month-to-month pricing option
Cons
- Good performance results but currently limited in third-party testing
All of the deluxe antivirus suites offer extra tools as part of their package, but if we had to pick one that stands out in this respect, it’d be Panda Dome Complete. It has the usual PC maintenance utilities such as a disk defragmenter for hard drives and a startup apps manager. But it also has a VPN, Wi-Fi network scanning, a process monitor, a virtual keyboard, an application control feature, and more.
It also makes it very easy to find everything since it uses a tiled interface on a single screen, and the protection is good too. Granted, you’ll pay more for Panda Dome Complete than some other worthwhile antivirus programs, but it offers lots of value for power users.
Read our full
Panda Dome Complete review
Windows Security – Best free antivirus
Pros
- Built into Windows 10 and 11
- Settings are easy to review and customize
- Integrates with other security aspects of Windows
Cons
- Tends toward false positives, especially with SmartScreen
- Lacks the advanced features found in third-party products
If Windows is already working, why add anything else? If its built-in security suite, Windows Security, performs on par with the best of the free antivirus options—as we discovered in our roundup of the best free antivirus—why add the extra baggage of a third-party program? Sure, other antivirus programs might offer marginally better protection, but not enough to outweigh the convenience of rolling with Microsoft’s home-grown offering. Windows Security also has ransomware protection, which many free options don’t. Plus, you avoid the nuisance of a third-party suite’s regular upgrade notifications. To learn more, see our video on How to use Windows Security.
However, if you’re looking for more features, such as online privacy tools, a VPN, or encrypted cloud backup, you may want to use a third-party program instead, as these are not currently available in Windows Security. Nonetheless, it’s a free program that already comes preinstalled with Windows machines and it does a good job of keeping you protected from most threats.
Read our full
Windows Security review
Intego Mac Internet Security X9 – Best Mac antivirus
Pros
- Two-way firewall
- Good performance
Cons
- Mac-specific (no Windows / Android protection)
As the headline reveals, the focus of this roundup is the best antivirus for Windows PCs, but many PC enthusiasts are the de facto IT for friends and family. If you want to help an associate or loved one achieve strong antivirus protection for an Apple machine, our colleagues at Macworld recommend Intego’s Mac Internet Security X9. The suite combines VirusBarrier with NetBarrier to create a pair of utilities designed to catch and kill malware threats, and spot potential intrusion attempts from outside as well as outgoing attempts from rogue software. Together these tools offer a high level of protection against direct and indirect unwanted software and malware threats.
In Macworld’s testing, Intego VirusBarrier caught all their malware and ‘uninvited software’ samples, including ones for other platforms. They were also warned when they opened a disk image with a malicious installer.
The tool offers good compatibility with macOS, and unlike some of the competitors, it looks like a real Mac program.
What to look for in an antivirus suite
There are three basic requirements that an antivirus suite should meet:
- High-detection rate for malware and other threats
- Low impact on system resources
- An easy-to-use interface
That’s not all to consider, however. These days, many security suites come with extras such as a backup service for your most essential files, Android and iOS apps for mobile security, a more advanced firewall, family protection (read: child restriction) features, and the right to use the program on multiple PCs. Access to a VPN and a password manager have become more common, too. Whether you need those extras depends on your personal situation.
How we test
First, we take a look at the interface to determine how easy or complicated it is. Does the interface make it easy to get at essential tools like PC scans and password managers, for example, or is everything buried under multiple clicks? Are there elements that look like they should be clickable but aren’t? Are alerts interactive or purely informational, and do they make sense in context?
We also examine the features on offer. Every good antivirus suite should have the basics like scanning and real-time protection, but many vendors offer elements that go beyond basic security like password managers or firewalls. We try to discern whether any of these extra features are particularly useful, or just frills that look nice but don’t serve a practical purpose.
To test the suite’s demand on system resources, we run three benchmarks. The first is PCMark 10’s Extended test, which simulates a variety of workloads including editing spreadsheets, browsing the web, running video chat, and light gaming.
PCWorld
We run the benchmark before the security suite is installed. Then we install the software, have it run a full scan on our Windows 10 test machine, and start a second run of the benchmark at the same time. Then we compare the overall scores to see if the decline between the two benchmark runs is significant.
We repeat the same process using UL Procyon, which simulates document editing in Microsoft Office apps—e.g., Word, Excel, PowerPoint. Then, as the harshest stress test, we use Handbrake to transcode a video before and after installing the antivirus software. On many home PCs, this encoding task utilizes 100 percent of the CPU. We then compare transcoding times to see if there’s any significant decline.
Our test machine is an Acer Aspire 3 15 with an AMD Ryzen 5 7520U, 8GB RAM, and a 512GB SSD. Each security suite is tested on a clean install of Windows 10 Home.
As for the antivirus suite’s detection capabilities, we’ll rely on the opinions of security researchers dedicated to this task. We take into consideration reports from outlets such as A-V Comparatives, A-V Test, and SE Labs.
We’ll also take pricing into account and what you get for it.
Whenever possible we’ll review security suites using a free trial to get a sense of what consumers see when they first try out a new product.
FAQ
Will antivirus software slow down my computer?
The short answer is maybe, but probably not. Antivirus software scans files and programs to ensure there is no malware or other harmful threat present. The longer the time frame between each scan, the more files the program will need to check. These intensive scans may have some noticeable effect on your computer speed. It’s therefore recommended that you schedule your scans to run more frequently and/or at night so as to not impact your computer usage.
While antivirus software can affect the speed of your computer, it is most likely not the only factor—or even the most prominent. Other factors such as unnecessary startup and background programs, insufficient RAM, or even undiagnosed malware can have more drastic effects on your computer speed than a simple antivirus scan.
Should you pay for antivirus?
It depends on what antivirus features are most important to you. Do you just need a program that will scan, detect, and remove malware? Then go with a free version. But if you are looking for more advanced features such as the ability to block webcam hacking, run suspicious apps in a sandbox environment, and permanently delete sensitive files, then you should seriously consider upgrading to a paid premium antivirus service.
Overall, premium antivirus software is better suited to more complete coverage against threats—especially for inexperienced users. Children and seniors are particularly vulnerable to modern threats and therefore paid antivirus apps, which allow for multiple-device protection, may be a better option for families.
What should I do if my antivirus detects a threat?
In a perfect world, your antivirus software will halt and clean the infected files for you. However, this largely depends on which antivirus program you are using.
In general, the antivirus will send a warning to you and try to quarantine the infected file in order to keep it from spreading. Once isolated, the software will give you the option to try to remove the infection or delete the file altogether.
What is the difference between a full scan and a quick scan?
A full scan performs a comprehensive and thorough check of your whole system. It usually checks your system memory, startup programs, system backup, email databases, hard drives, and any removable storage drives.
A quick scan only checks a few areas including startup programs, system memory, and boot sectors. It may not detect all malware, but it can usually give you an idea if your computer has a virus.
As to when you should do either, we recommend a full scan once per week, during computer usage downtime (such as late at night). A quick scan can be done anytime you like, but it’s usually only necessary if you notice suspicious activity on your PC.
Do I need to update my antivirus software?
Absolutely! Keeping your antivirus software up-to-date is crucial in helping you to avoid the most recent threats.
That being said, most antivirus software today—whether free or paid—will default to automatic updates. This way you don’t need to worry about manually updating your software. It may still be worth checking to confirm that your antivirus is running the most up-to-date version from time to time.
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