The Best Antivirus Software for 2025

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The IBM PC launched in 1981, and PC-based viruses came along shortly thereafter, followed by the first antivirus utilities. PCMag has reviewed antivirus protection from the beginning. Familiar names like Norton, Panda, and Trend Micro show up in our antivirus roundups as far back as 1993. Every year sees new types of malware and new tools to fight them, and we’re right in the mix, applying real-world tests using all kinds of malware, even virulent ransomware. Based on factors including our tests, independent lab tests, and decades of experience, we recognize Bitdefender Antivirus Plus and Norton AntiVirus Plus as our Editors’ Choice antivirus apps. Look over the summary of our top antivirus selections below, compare their specs side by side at the bottom of the story, and click through to our full reviews for more details.

What Are Viruses, Malware, and Ransomware?

We call it antivirus, but in truth, it's unlikely you'll get hit with an actual computer virus. Malware these days is about making money, and there's no easy way to cash in on spreading a virus. Ransomware and data-stealing Trojans are much more common, as are bots that let the bot-herder rent out your computer for nefarious purposes. Modern antivirus utilities handle Trojans, rootkits, spyware, adware, ransomware, and more. As noted, PCMag has reviewed many dozens of commercial antivirus utilities. We've named two Editors' Choice winners out of that extensive field and honored others with four-star or better ratings. One of the utilities listed in this article should address the problem if you have malware.

What Is the Most Widely Used Antivirus Software?

Every Windows computer has Microsoft Defender Antivirus installed, making it the most widely installed antivirus. However, if you've installed third-party protection, Defender stays on the sidelines. If no other antivirus is present or your existing antivirus expires, Defender steps up.

Commercial antivirus apps offer protection beyond what's included with Windows, but Defender is looking better lately, with some solid scores from independent testing labs. The combination of good lab scores and a great score in our hands-on malware protection test brought its rating up to 3.5 stars. As it is a free, built-in utility, however, we're not including it in this roundup of commercial antivirus apps.

What Is the Best Free Antivirus Software?

You've come to the wrong place if you're looking for free antivirus—our list here includes the best antivirus software overall, and they're not free. Head over to the best free antivirus for our top picks there.

What Is the Best Antivirus for macOS?

All of the software listed here works on Windows, but if you're an Apple user, check out our story on the best Mac antivirus software.

McAfee vs. Norton: Which Is Better?

As for the most-used commercial antivirus software, survey results vary, but Norton and McAfee generally appear at or near the top. Is Norton or McAfee better? Both are good, but of the two PCMag has identified Norton as an Editors' Choice.

What Is the Best Virus Protection According to Independent Tests?

We take the results reported by independent antivirus testing labs seriously. The simple fact that a company's antivirus shows up in the results is a vote of confidence, of sorts. It means that the lab considered the program significant, and the company felt the cost of testing was worthwhile. Of course, high scores on the tests are also important.

We follow four labs that regularly release detailed reports: SE Labs, AV-Test Institute, MRG-Effitas, and AV-Comparatives. We've devised a system for aggregating their results to yield a rating from 0 to 10.

How We Test Malware, Spyware, and Adware Defenses

We also subject every antivirus app to our own hands-on test of malware protection, in part to get a feeling for how the app works. Depending on how thoroughly the antivirus prevents malware installation, it can earn up to 10 points for malware protection.

Our malware protection test necessarily uses the same set of samples for months. To check a program's handling of brand-new malware, we test each antivirus using a large collection of extremely new malware-hosting URLs supplied by MRG-Effitas, noting what percentage of them it blocked. Apps get equal credit for preventing all access to the malicious URL and wiping out the malware during download.

Some apps earn stellar ratings from the independent labs yet don't fare as well in our hands-on tests. In such cases, we defer to the labs, which bring significantly greater resources to their testing. Want to know more? You can dig into a detailed description of how we test security software.

What's the Best Antivirus for Malware Protection?

Antivirus utilities distinguish themselves by going beyond the basics of on-demand scanning and real-time malware protection. Some rate URLs you visit or that appear in search results using a red-yellow-green color-coding system. Some actively block processes on your system from connecting with known malware-hosting URLs or fraudulent (phishing) pages.

All software has flaws, and sometimes those flaws affect your security. Prudent users keep Windows and all programs patched, fixing those flaws as soon as possible. The vulnerability scan offered by some antivirus apps can verify all necessary patches are present and even apply any that are missing.

Spyware comes in many forms, from hidden programs that log your every keystroke to Trojans masquerading as valid programs while mining your data. Any antivirus should handle spyware, along with all other types of malware, but some include specialized components devoted to spyware protection.

You expect an antivirus to identify and eliminate bad programs and leave good programs alone. What about unknowns, programs your AV can't identify as good or bad? Behavior-based detection can, in theory, protect you against malware, so new researchers have never encountered it. However, this isn't always an unmixed blessing. It's not uncommon for behavioral detection systems to flag many innocuous behaviors performed by legitimate programs.

Allowlisting is another approach to the problem of unknown programs. This type of security system only allows known good programs to run; unknowns are banned. This mode doesn't suit all situations, but it can be useful. Sandboxing lets unknown programs run, but it isolates them from full access to your system, so they can't do permanent harm. These various added layers serve to enhance your protection against malware.

What's the Best Antivirus for Ransomware Protection and Firewall?

Firewalls and spam filtering aren't common antivirus features, but some of our top picks include them as bonuses. Some of these antivirus programs are even more feature-packed than certain security suites.

Among the other bonus features you'll find are secure browsers for financial transactions, secure deletion of sensitive files, wiping traces of computer and browsing history, credit monitoring, virtual keyboards to foil keyloggers, cross-platform protection, and more. And, of course, we've already mentioned sandboxing, vulnerability scanning, and application allowlisting.

We're seeing more and more antivirus apps adding modules specifically designed for ransomware protection. Some work by preventing unauthorized changes to protected files. Others keep watch for suspicious behaviors that suggest malware. Some even aim to reverse the damage. Given the growth of this scourge, any added protection is beneficial.

Beyond Antivirus: Install a VPN

Your antivirus utility works in the background to keep out any faint possibility of infestation by malware, but its abilities don't extend beyond the bounds of your computer. When you connect to the wild and wooly internet, you risk the possibility of your data being compromised in transit. Sticking to HTTPS websites when possible can help, but you should install a VPN (virtual private network) for full protection of your data in transit. This component is important enough that we're starting to see it as a bonus feature in some antivirus tools.

What Is the Best Antivirus Software Now?

Which antivirus should you choose? While you have many options, two stand out from the rest. Bitdefender Antivirus Plus holds perfect and near-perfect scores from three independent antivirus testing labs, with more features than some security suites. Norton AntiVirus Plus likewise offers many suite-level features, and it gets excellent scores from all four testing labs we follow. We've named these two our Editors' Choice winners for commercial antivirus, but they're not the only antivirus apps worth consideration. Read the reviews of our top-rated programs, then make your own decision.

Editors’ Note: Given that the US government has banned new sales of Kaspersky security products, we no longer recommend them.