Anyone with a Windows PC should install antivirus software on their machine the moment it’s out of the box and should update that software regularly to stay ahead of emerging and evolving cyber risks. After all, antivirus software is an essential tool in your identity protection toolbox and there’s just too much personal information on your computer these days to risk even a day without online threat protection.

We regularly research and test our options to determine which software leads the pack, because not all antivirus software programs are equal in quality. The best antivirus software is a program that includes features like malware protection, monitors downloads and observes your system’s activity for malicious software and suspicious behavior. Even if you have a secure browser and other threat-detection software, it’s all too easy for an insidious program to wind up on your machine, and that can lead to chaos.

If you’re looking for malware protection and antivirus software with the best security features, here’s the first thing you need to know: Microsoft Defender Antivirus — the free antivirus software and virus protection program that comes with Windows 10 — is a decent antivirus tool for protecting your PC and offering internet security. (Amazingly, Microsoft provided no built-in protection for Windows back in the days of Windows 98 and XP.) Using Microsoft Defender for threat detection should be your starting point for the best antivirus security on Windows and most people will find they don’t need to go any further when it comes to nailing down an antivirus solution.

However, keeping your personal data safe and guarding your privacy extends beyond virus protection, and that’s where third-party antivirus software shines. A full protection package can monitor your Windows operating system as well as MacOS, iOS and Android devices and include a password manager, secure online backup, identity theft protection, a VPN, parental control, webcam protection, protection against phishing and malicious websites and more — all worthwhile security suite tools that can keep your data secure and guard your privacy.

To help you decide, I’ve put together a list of the best antivirus products for Windows 10, encompassing both free antivirus programs and subscription options. These picks of the best antivirus programs are a combination of recommendations from independent third-party labs AV-Test, AV-Comparatives and SE Labs, as well as our own hands-on testing. This list is updated periodically.

We would also like to note that antivirus software isn’t the only security feature you should invest in. A secure VPN to protect your internet traffic, a password manager to keep track of login credentials and an end-to-end encrypted messaging app to stop others from spying on your communications are all essential to protecting your personal information online. Cybercriminals are becoming increasingly more sophisticated and high-profile attacks like the Columbia Pipeline hack are becoming more commonplace, which is concerning.

Our recommendations

Looking for free antivirus protection, malware protection or virus detection, willing to pay for an antivirus program that offers broad internet security coverage across all your devices, including from ransomware and phishing, or need to remove a computer virus or malware from your PC right now? Here’s where to start.

Also worth considering

In addition to the four antivirus apps we recommend above, a handful of other anti-malware tools are worth considering among the best antivirus protection if you find them at a better price or just prefer to use one over our picks above.

What about Avast?

Test after test, Avast’s antivirus for Windows performs well for malware detection. And we’ve included its antivirus in our list of recommended security app options before. But Avast was in the news for several months for its non-antivirus business, so we looked at the company, specifically reports at the end of 2019 that Avast allegedly collected user data with its browser plug-ins and antivirus software and then sold data it collected through its Jumpshot subsidiary in early 2020.

In response to the reports that his company gathered and sold the details of its customers’ online activities, Avast’s CEO Ondrej Vlcek said in a statement that he understood that his company’s actions raised questions of trust in his company. To address that, Avast terminated Jumpshot data collection in January 2020 and closed its operations because the data collection business wasn’t in line with Avast’s privacy priorities.

These newer reports follow another in 2019 from Avast that its internal network was breached, possibly to insert malware into its CCleaner software, similar to an earlier CCleaner hack that occurred prior to Avast’s acquiring the Windows utility.

Avast is now saying the right things about taking its customers’ privacy seriously, but it only came to that point after reacting to investigative reporting that revealed the Jumpshot practices. (The CCleaner revelations, while concerning, were self-disclosed, which is important to building user trust.) We hope Avast’s more privacy-friendly policies mean that there will be no further Jumpshot-style activities. In the meantime, we’d recommend using one of the many other solid choices in this realm (listed above).

What about Kaspersky?

Because the company has been in the news the past few years, let’s talk about Kaspersky Lab — specifically about the federal ban that blocks US government agencies from using Kaspersky products.

Based in Moscow, Kaspersky Lab has for years produced some of the best antivirus software for business antivirus needs and home customers. But in 2017 the US government prohibited Kaspersky software on federal government computers because of alleged ties between Kaspersky and the Russian government.

Notably, the ban does not apply to its consumer products. But as with China-based Huawei, the question remains: If the federal government doesn’t think the products are safe enough for its own devices, should consumers avoid them as well?

In a statement sent to CNET, the company said, “Kaspersky Lab has no ties to any government, and the company has never, nor will ever, engage in cyber offensive activities. Kaspersky Lab maintains that no public evidence of any wrongdoing has been presented by the US government, and that the US government’s actions against Kaspersky Lab were unconstitutional.”

In Kaspersky’s favor, it continues to earn top scores and awards for virus and malware detection and endpoint protection from independent testing labs. And it’s reasonably priced.

In the end, even though no one has ever publicly produced a “smoking gun” linking the company to Russian intrigue, we think any of the options listed above are a safer bet. And, if you are a US government employee or work with the federal government, you’ll want to steer clear of Kaspersky.

Antivirus basics: What to look for

Picking the best antivirus software for Windows means finding one that keeps your PC safe, doesn’t take up a lot of system resources, is easy to use and stays out of the way till you need it. Here’s what to look for.

Effectiveness. Antivirus software runs virus scans for known viruses and malware, of course, and can offer real-time protection. And it watches for shady websites and suspicious links to keep you out of trouble. It can also offer ransomware protection and monitor unexpected behavior that may be a sign of new and not-yet-identified viruses and malware. You want antivirus software that can successfully identify these unknown online threats without flagging too many false positives.

Light on system resources. You don’t want antivirus software that taxes your PC’s resources. If after you install the program, websites open slowly, apps download or open sluggishly or file copies take longer than expected, you may want to try another service. The good news is, all our picks offer a free trial to let you try out the antivirus program, so if your system feels sluggish after installation, you may want to keep looking.

Cost and discounts. Don’t just pay the sticker price for antivirus protection. Before you buy, check for discounts on a company’s website. Another way to save: The prices we list above are for 10 devices — if the company offered that package — but you can trim your cost with antivirus packages if you need to cover just three or five devices. You may also find discounts on an app’s Amazon page.

Privacy. To be effective, antivirus software needs to monitor what’s going on with your PC and check in with company servers about unusual behavior. The companies say they anonymize this technical data as much as possible to protect your privacy. But if you want to know more, the security companies on our list post privacy policies on their websites, so read their privacy statements to learn what the companies do with the information you share.

Protection for other platforms. Microsoft is by far the biggest target for viruses and malware. But Android is second, with just under 1% of apps installed on Android devices with Google Play Protect in the potentially harmful app, or PHA, category.

The threat to MacOS and especially iOS is low, in part because of the tight control Apple has over its app stores. While the Mac does come under attack via side-loaded apps, it’s rare, and if you download apps only from the Mac and iOS app stores and keep your guard up when clicking links and download files, you should be OK without an antivirus app on Apple devices.

More computer security advice

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Special report: A winning strategy for cybersecurity (free PDF from TechRepublic)This is the browser you’ll want if you care about online privacy
The guide to password security (and why you should care)
6 steps to secure your Windows 10 machine
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