Read our full Bitdefender Antivirus Plus review. All of Norton's antivirus products offer excellent malware protection, and the once-heavy system-performance load is much lighter. The number of extra features each program has varies, but the sweet spot in the lineup is Norton Deluxe. It includes a password manager that works on all major platforms, unlimited VPN service, dark-web personal-data monitoring, parental controls and up to 50GB of online storage space.
Two other offerings, Norton Premium and Norton Platinum, give you more online storage and expand the antivirus and VPN coverage to 10 and 20 devices, respectively.
If you want full-on identity protection, Norton offers three bundles with varying degrees of LifeLock service and even more online storage. Their subscription prices run well into the triple digits, but still cost less than if you were to buy the identity protection, password manager, cloud-backup storage and antivirus software separately.
Unlike some of the other best antivirus software makers, Norton doesn't offer a file shredder, file encryption or secure web browser with any of its products. Yet every other digital-protection service you could possibly ask for is included with at least some of its bundles. Read our full Norton Deluxe review. McAfee's malware detection has improved greatly in the past couple of years, but it's still not quite top-of-the-line.
To get parental controls or one of the best password managers in the business, you'll have to spring for McAfee Total Protection or its sibling McAfee LiveSafe, which comes pre-installed on many new PCs. The multi-device licenses of those two security suites also come with an identity-protection service. But none of the McAfee products have a secure browser or webcam protection, which you often get with other premium antivirus programs.
Read our full McAfee Internet Security review. Trend Micro offers very good protection, but its malware-detection engine creates a heavy system load during scans and returns a fair number of false-positive results. Parental controls, a system optimizer and a file shredder are bundled into the mid-range Trend Micro Internet Security.
Trend Micro Maximum Security adds a password manager, a secure browser and file encryption, while the new Trend Micro Premium Security adds a VPN and dark-web monitoring of personal data. However, none of Trend Micro's programs include a two-way firewall or webcam protection, standard with other brands' midrange offerings.
Nor does the premium product have the cloud storage or backup software that some of the best antivirus brands add as enticements to their flagship packages. Read our full Trend Micro Maximum Security review. ESET is one of the biggest antivirus names in Europe, with a very small system-performance load and fast scans. Its malware-detection rate used to be kind of meh, but has improved markedly in recent lab tests.
However, there's no VPN client, backup software or file shredder. ESET's pricing is per device, which is optimal for users who might have more than a few devices to protect. But if your device count gets into double digits, ESET's costs can add up. Sophos Home Premium does its job economically, offering reasonable protection from malware at an affordable price. Because it's spun off from Sophos' enterprise software for business clients, Sophos Home Premium lacks many of the bells and whistles other security suites offer, such as a password manager, identity theft protection service or VPN service.
What Sophos Home Premium does have is the essentials: ransomware rollbacks, webcam defenses and protection against keyloggers, malicious websites and boot-sector and fileless malware.
It also has a web-filter system for parents and an online management console from which you can tweak most of the settings.
Some people might demand more from an antivirus suite, but anyone who would rather buy only what they need will appreciate Sophos Home Premium's just-the-basics approach. Read our full Sophos Home Premium review.
A good paid antivirus suite is a digital-protection jackknife, often bundling in parental controls, identity theft protection, a password manager, backup software, cloud storage, a firewall, a system optimizer and software for Mac, Android and iOS as well as Windows. But what if you just want Windows antivirus software without all of those pricey extras? And what if you can't afford to pay for antivirus software? One of the best free antivirus programs might be exactly what you need.
Free antivirus software used to be a step down from the paid software and involved trade-offs. The protection wasn't as good and you'd either have to put up with ads filling your screen or with constant nags to upgrade to a paid program. That's all changed. One of the best antivirus makers, Kaspersky, offers a free version with the same excellent malware protections as its paid offerings. Its top rival, Bitdefender Antivirus Free Edition, has been officially discontinued, although Tom's Guide readers can still download it with this link.
A merger between the biggest names in free antivirus, Avast and AVG, created a combined malware-detection engine that's much better than the sum of its parts. Meanwhile, Microsoft's built-in antivirus software, Windows Defender, aka Microsoft Defender Antivirus, has gone from being a joke to being one of the best antivirus programs out there, free or paid.
You can now get free antivirus protection that's as good as anything you pay for. So here are the best free antivirus programs based on their protection, system impact, ease of use and extra features. Kaspersky Security Cloud Free 2. Bitdefender Antivirus Free Edition 3. Windows Defender Antivirus 4. Avast Free Antivirus 5. Kaspersky Security Cloud Free Antivirus may be the best free antivirus program we've ever seen.
It has excellent malware protection, a decent set of extra functions and features, and a system-performance impact so small that our computer actually sped up after we installed the program. Bitdefender Antivirus Free Edition has been officially discontinued, and we're not sure how long Tom's Guide readers can still download it. It's the best "set it and forget it" free antivirus option. It's now one of the best antivirus programs altogether.
You don't have to install or download it — it's already on your PC. If you want an unlimited password manager or a hardened web browser, Avast Free Antivirus might be for you.
Its malware protection is much better than it once was, although its performance impact is fairly heavy. Avast's stepsister AVG has the same malware-detection engine, but lacks Avast's full slate of useful extra features.
But it does have a file shredder and system optimizer. We have to mention one program that's not antivirus software, but which we recommend anyway: Malwarebytes Free. While antivirus tries to stop malware from infecting your machine, Malwarebytes functions as the cleanup crew, sweeping out less-harmful adware or potentially unwanted programs that the antivirus software ignores.
It works well alongside any antivirus program. Kaspersky doesn't talk much about its free antivirus product, and you might have a hard time finding the free Kaspersky software download page on the company's website. That's too bad, because Kaspersky Security Cloud Free is the best free antivirus product we've ever tested. We've never seen such a combination of excellent protection and extra features in a free antivirus program. It's got a bright, comprehensible interface, a lot of customization potential and Kaspersky's unbeatable malware protection.
The program also lets you schedule scans, and its performance impact was so small that it actually sped up our test machine a bit. Kaspersky's useful extra features include a file shredder, an on-screen keyboard and an email scanner.
The password manager and VPN service are fairly limited, however, unless you pay. Read our full Kaspersky Security Cloud Free review.
Bitdefender has officially discontinued Antivirus Free Edition, and it will be supported only until June 30, We still love it and you can still get it , but proceed at your own risk. Compared to premium paid antivirus programs that are big, heavy and loaded with extra bells and whistles, Bitdefender Antivirus Free Edition is like a '60's sports car, stripped to the essentials but still providing plenty of power.
Bitdefender Antivirus Free Edition offers nothing but the basics. There's no password manager, no gaming mode, no quick scans and no scan scheduling. You can manage the software from the program's System Tray icon, but you don't really need to interact with Bitdefender Antivirus Free Edition after its installation.
Yet Bitdefender Antivirus Free Edition has the excellent Bitdefender malware-detection engine, which sits just below Kaspersky and Norton in the lab-test rankings. It's the best free antivirus software if you want a security solution that you can set up and then forget about. It's also perfect if you need to protect the computer of an elderly relative but don't have time to manage antivirus software from afar. Read our full Bitdefender Antivirus Free Edition review.
Microsoft's built-in antivirus software is now a heavy hitter. While Windows Defender, aka Microsoft Defender Antivirus, doesn't quite beat Norton or Kaspersky in malware-protection lab tests, it comes out ahead of Avast, AVG and most other free antivirus products while operating almost entirely behind the scenes. You won't be getting many extra features with Windows Defender itself, yet Windows 10 does have parental controls, a gaming mode and protections for its own Edge and Internet Explorer browsers.
There's no built-in VPN, but you also won't be bothered by pop-ups trying to upsell you to paid antivirus software. As for a password manager, there's a stealth one built into the Microsoft Authenticator app for Android and iOS that syncs with the Edge browser, as long as you're signed into your Microsoft account on all devices.
We still recommend going for Kaspersky Security Cloud Free, which has even less of a system impact, better malware protection and more useful extras, but there's absolutely nothing wrong with using Windows Defender as your primary antivirus solution.
Read our full Windows Defender review. Avast Free Antivirus has the best assortment of extra goodies of any free antivirus program, including a hardened browser, a gaming mode, a Wi-Fi network scanner and a recently added ransomware shield. Unfortunately, the unlimited password manager has been discontinued. The program is also very customizable, letting you tweak its appearance and functions to suit your style. Perfect score in our phishing protection test. Good scores in our malware-blocking and malicious URL blocking tests.
Support for Android and iOS. Bottom Line: Kaspersky Security Cloud Free offers full-scale malware protection and even some suite-level features. It gets superb scores from the independent labs, and it won't cost you a penny.
Pros: Very good scores in multiple independent lab tests and our own hands-on tests. Cons: Initial scan slower than average. No longer offers web protection browser extension. Pros: Same core antivirus protection as for-pay Bitdefender. Excellent scores from independent testing labs. Good scores in phishing and malicious URL blocking tests. Cons: Lacks some advanced malware protection layers found in commercial antivirus.
Bottom Line: Bitdefender Antivirus Free Edition includes the same core antivirus technology found in the commercial Bitdefender Antivirus, focusing on the essential task of antivirus protection with minimal add-ons. Pros: Excellent scores from independent testing labs.
Good score in our malware blocking test. Option to install many related Avira products. Cons: Slow on-demand scan. Browser protection only for Chrome and Firefox. So-so antiphishing score.
Real-time protection missed some malware EXEs, identified some valid programs as malware. Bottom Line: The free Avira Antivirus gets excellent ratings from the independent labs, but it doesn't fare as well in our antiphishing test, and its browser protection only works with Chrome and Firefox. Pros: Built into Windows Good lab scores. Excellent hands-on malware protection score. Simple ransomware protection. Always on if no other antivirus is present.
Cons: Poor results in phishing protection test. Awkward scan scheduling. SmartScreen Filter works only in Microsoft browsers. Bottom Line: Microsoft Windows Defender Security Center protects Windows 10 PCs that have no other antivirus protection, and it has significantly improved in lab test results and our own hands-on tests.
Pros: Very good scores in our hands-on tests. Decent antiphishing score. Remote management. Cons: No test results from independent labs. Parental content filter ineffective. Slow full scan. Bottom Line: Sophos Home Free gives consumers antivirus protection built for business, including remote management, but no testing labs vouch for its accuracy.
Cons: Mixed scores in independent lab tests. Low scores in our hands-on tests. No protection against malicious or fraudulent URLs. Lacks features found in competing free products products and in its own previous edition. Bottom Line: In a complete makeover, adaware antivirus free 12 has a new name and a new look. Under the hood, though, its test results aren't the best, and competing free products have much more to offer. Pros: Antivirus protection licensed from Kaspersky. Tough, effective two-way firewall.
Bonus features. Cons: No antivirus lab test results. Lacks some antivirus features. No protection for malicious or fraudulent websites. Behavioral detection tars good and bad programs in testing.
If you have malware , one of the products listed in this article should take care of the problem. These commercial products offer protection beyond the antivirus built into Windows 10; the best free antivirus utilities also offer more than Windows does.
However, Microsoft Windows Defender Security Center is looking better and better lately, with some very good scores from independent testing labs. The combination of good lab scores and a great score in our hands-on malware protection test was enough to bring it up to 3.
It doesn't appear in this roundup of commercial antivirus products, naturally. We take the results reported by independent antivirus testing labs very seriously. The simple fact that a company's product shows up in the results is a vote of confidence, of sorts. It means the lab considered the product significant, and the company felt the cost of testing was worthwhile.
Of course, high scores in the tests are also important. We've devised a system for aggregating their results to yield a rating from 0 to We also subject every product to our own hands-on test of malware protection, in part to get a feeling for how the product works.
Depending on how thoroughly the product 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 product's handling of brand-new malware, we test each product using a large collection of extremely new malware-hosting URLs supplied by MRG-Effitas , noting what percentage of them it blocked.
Products get equal credit for preventing all access to the malicious URL and for wiping out the malware during download. Some products 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, as they bring significantly greater resources to their testing. Want to know more? You can dig in for a detailed description of how we test security software. Antivirus products distinguish themselves by going beyond the basics of on-demand scanning and real-time malware protection. Some rate URLs that you visit or that show up 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 with fraudulent phishing pages. 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 products can verify that 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 that masquerade as valid programs while mining your personal 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 to leave good programs alone. What about unknowns, programs it can't identify as good or bad? Behavior-based detection can, in theory, protect you against malware that's 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. Whitelisting is another approach to the problem of unknown programs. A whitelist-based 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. Firewalls and spam filtering aren't common antivirus features, but some of our top products include them as bonuses. In fact, some of these antivirus products are more feature-packed than certain products sold as 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 keyboard to foil keyloggers, cross-platform protection, and more.
And of course, we've already mentioned sandboxing, vulnerability scanning, and application whitelisting. We're seeing more and more antivirus products 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.
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