Microsoft Defender is improving, but you still shouldn't rely on it by itself. That doesn’t mean you have khổng lồ pay extra, though. We’ve sầu tested the top miễn phí antivirut apps so you can protect your PC for không tính phí.

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Kaspersky Security Cloud Free offers full-scale malware protection along with some suite-cấp độ features. It gets superb scores from the independent labs, và it won't cost you a penny.
AVG AntiVirus Free offers precisely the same excellent antivirut protection engine as Avast Free Antivirut, with useful bonus features.
Avira Free Security goes beyond basic antivirus with dozens of security-related utilities. However, many require payment for full functionality.
Microsoft Defender Antivi khuẩn protects Windows 10 PCs that have sầu no other antivirus protection. It does the job, but still won’t beat the best miễn phí or paid third-tiệc nhỏ antivirus tools.
If you’re going to lớn replace the antivirus built inkhổng lồ Windows with a third-tiệc ngọt không lấy phí solution, you want one that will beat the OS's integrated protection. Adaware Antivi khuẩn Free is improving, but it still doesn’t meet that standard.
Cheông xã Point ZoneAlarm Free Antivirus+ combines Kaspersky-powered antivirus with an effective firewall, but it lacks protection against malicious & fraudulent websites, and some of its bonus features don't work.
641) this.querySelector("svg").classList.toggle("rotate-180");document.querySelectorAll(".proscons").forEach(function(element)element.classList.toggle("lg:hidden"));">Pros & Cons
Table of ContentsTable of ContentsReturn to The TopFree Antivi khuẩn vs. Paid AntivirusIndependent Antivi khuẩn Lab Test ResultsWe Test Malware Protection Useful FeaturesWhat"s Not Here?Which Free Antivirus Is Best?Compare Specs: Our Picks Side by Side

You say you’ve maxed out your budget buying holiday gifts, và you don’t have sầu anything left to lớn pay for antivi khuẩn protection? Don’t worry. You don’t have sầu khổng lồ go out unprotected inlớn the storm of malware and hackers that the modern internet represents. You can bundle up your computers in the warm, fuzzy protection of an effective antivirus without dipping inkhổng lồ your funds. The best không tính phí third-các buổi tiệc nhỏ antivirus programs handily outperform Microsoft Defender, the antivirut built into lớn Windows. In fact, they rate better than many commercial programs. We’ve sầu analyzed dozens of products, both không tính phí & commercial antivi khuẩn, so you can make the best choice for your situation. With không lấy phí antivirus tools you get the added benefit of taking several out for a spin before making the final choice.

Your antivirut should definitely have the ability to lớn root out existing malware, but its ongoing task is khổng lồ prevent ransomware, botnets, Trojans, và other types of nasty programs from getting a foothold. All the antivi khuẩn programs in this collection offer real-time malware protection. Some take the fight to the browser, working hard lớn ensure you never even browse lớn a malware-hosting site, or get fooled into lớn turning over your credentials khổng lồ a phishing site.
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Free Antivi khuẩn vs. Paid Antivirus

If không tính phí antivirus tools are so great, why should anytoàn thân pay? For one thing, quite a few of these products are miễn phí only for noncommercial use; if you want to lớn protect your business, you must pony up for the paid edition. At that point, you should probably consider upgrading to a full security suite. After all, it"s your business"s security on the line.


Even for personal use, most for-pay antivi khuẩn tools offer more than their miễn phí counterparts—sometimes a lot more. For example, the paid editions of Adaware & ZoneAlarm add protection against malicious and fraudulent websites the không tính tiền versions lack. And Panda reserves quite a few features for paying customers, aao ước them firewall protection, application control, cross-platform support, and detection of insecure Wi-Fi connections.

In addition, many companies don"t offer full-scale tech tư vấn for users of the không tính phí edition. The first time you need extra help digging a particularly stubborn piece of malware out of your system, you might regret the laông chồng of tư vấn.

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Independent Antivirut Lab Test Results

Around the world, researchers at independent antivirus testing labs spkết thúc their days putting antivirut tools khổng lồ the chạy thử. Some of these labs regularly release public reports on their findings. We follow four such labs closely: AV-Comparatives, MRG-Effitas, SE Labs, và AV-Test Institute. We also take note of whether vendors have contracted for certification by ICSA Labs & West Coast Labs.

Security companies typically pay for the privilege of being included in testing. In return, the labs supply them with detailed reports that can help improve their products. The number of labs that include a particular vendor serves as a measure of significance. In each case, the lab considered the hàng hóa important enough to lớn test, và the vendor felt the price was worthwhile. The labs don"t necessarily kiểm tra a vendor"s không tính tiền hàng hóa, but most vendors paông xã full protection into the không tính tiền sản phẩm, enhancing premium versions with additional features.

We Test Malware Protection

In addition to carefully perusing results from the independent labs, we also run our own hands-on malware protection thử nghiệm. We expose each antivi khuẩn lớn a collection of malware samples, including a variety of different malware types, & note its reaction. Typically, the antivirus will wipe out most of the samples on sight và detect some of the remaining ones when we try lớn launch them. We derive a malware blocking score from 0 to 10 points based on how thoroughly the antivi khuẩn protects the test system from these samples.

Since we use the same samples month after month, the malware-blocking test doesn"t measure a product"s ability lớn detect brand-new threats. In a separate chạy thử, we attempt lớn tải về malware from 100 very new malicious URLs supplied by London-based testing lab MRG-Effitas, typically less than a few days old. We note whether the antivirut blocked all access khổng lồ the URL, wiped out the malicious payload during tải về, or did nothing.

If you"re interested in learning more about our testing techniques, you"re welcome to read more about how we thử nghiệm security software.

Useful Features

Just about every antivi khuẩn hàng hóa scans files on access lớn make sure malware can"t launch, và also scans the entire system on demand, or on a schedule you mix. Once that cleaning and scheduling is done, blocking all access to lớn malware-hosting URLs is another good way khổng lồ avoid trouble. Many products extover that protection khổng lồ also steer users away from fraudulent websites, phishing sites that try to lớn steal login credentials for financial sites và other sensitive sầu sites. A few rate liên kết in search results, flagging any dangerous or iffy ones.

Behavior-based detection, a feature of some antivirut products, is a two-edged sword. On the one h&, it can detect malware that"s never been seen before. On the other h&, if it"s not done right, it can baffle the user with messages about perfectly legitimate programs.

Any antivirus should eliminate spyware along with other types of malware, but some products include features designed specifically for spyware protection. Features lượt thích encryption to lớn protect your sensitive sầu data & webcam control khổng lồ prevent remote peeping typically show up in commercial products, not miễn phí ones. But some miễn phí products include features lượt thích a simple on-screen keyboard lớn foil keyloggers.

One easy way lớn keep your PC protected is lớn install all security updates, both for Windows và for browsers and other popular applications. Windows 10 makes it easier than ever to stay up lớn date, but there are plenty of security holes in older Windows versions, in popular apps, và in add-ons. Scanning for vulnerabilities in the khung of missing updates is a feature most often found in commercial antivirut products, but it does turn up in some không lấy phí ones. In the menu below you can see which products include these useful features.

What"s Not Here?

Numerous free utilities devoted entirely lớn ransomware protection have come on the scene in the last few years. Alas, many of those have sầu fallen by the wayside, ahy vọng them Bitdefender Anti-Ransomware, Cybereason RansomFree, CyberSight RansomStopper, and Heilig Defense RansomOff. In any case, these are useful companion products, but they don"t vì chưng the job of a full-scale antivi khuẩn utility.

There are also numerous free antivi khuẩn utilities that work solely khổng lồ clean up existing malware infestations. You bring out these cleanup-only tools when you have a nasty malware problem. When the malware"s gone, they have sầu no further use since they offer no ongoing protection. Our favorite in this category is Malwarebytes Anti-Malware, and it"s one you should try if you"ve got a malware problem. But since they"re không lấy phí, you can keep trying others if the first one doesn"t bởi the job. When the scare is over, you"ll need a full-blown antivi khuẩn for ongoing protection.

Which Free Antivirus Is Best?

The new Avast One Essential takes the place of Avast Free Antivirus as Editors" Choice for không tính phí antivi khuẩn utility, while Kaspersky Security Cloud Free remains the other Editors" Choice. Both appear in lab reports from all four labs we follow. Kaspersky earned near-perfect scores, và Avast came close. Both products offer quite a bit more than simple antivirut. If you vày have a little cash in your budget for security, the best paid antivirut software does offer more và better protection. If not, try a few of these không lấy phí tools and see which one you lượt thích best.

Worried you might already be infected? Cheông chồng out our article on the signs you have sầu malware.