1. Top Rated Internet Security 2018
2. Best Internet Security For 2018
3. Best Internet Security Software 2018 For Mac
4. Best Internet Security For Mac 2018 Football

The best antivirus for Mac should have value-added features such as background monitoring, phishing protection, safe web browsing, gaming protection and parental controls. Money Back Guarantee. If the program offers a money back guarantee, we give full details including any special terms.

The best internet security software of 2019

• Bitdefender Total Security 2019 - 5 Devices - 1 Year - Secure up to 5 different devices: Windows, Mac OS, iOS and Android. The New Bitdefender Total Security 2019 Multi Device for Is Now Out! The Best Cybersecurityin theWorld, 29-Time Winner awarded by PC MAG.
• Internet security software provides all-in-one protection. The best Internet security software typically includes three essential components -- antivirus, anti-spyware and a firewall -- along with optional features, such as a spam filter and parental controls.

1. BitDefender Total Security Multi-Device 2018
2. Kaspersky Total Security 2018
3. McAfee LiveSafe
4. Symantec Norton Security Premium
5. BullGuard Premium Protection

With our mobile devices so central to everyday life, it pays to protect them from the evergrowing array of cyberthreats. That's why security suites that protect all your devices have become so popular.

But with so many options out there, where do you start? Our list of the best Internet Security software suites in 2019 can help.

The threat landscape has never been so varied and attackers have never been so sophisticated. This means that although our PCs are more secure than they have ever been, it's important to have the right security tools.

It’s hard to buy bad virus protection (especially if you chose them from our list of best antivirus) but many vendors offer packages of the basics plus other tools - such as firewalls and specific protections - that cover PCs, Macs and mobile devices.

But with wildly differing features and pricing it can sometimes be tough to pick the best one.

So if you're looking for some additional protection in the form of Internet Security, then you've come to the right place. Here are our picks

• This is our best antivirus buying guide

1. Bitdefender Total Security Multi-Device 2019

Bitdefender is a regular visitor to the top of the security charts, and with good reason – it’s lightning fast, exceptionally accurate and boasts a range of tools including secure browsing, a password manager and a very effective spam filter.

In its Total Security guise, it also delivers password management, secure browsing, battery management, VPN (with 6GB monthly allowance), Wi-Fi protection, ransomware protection, system optimisation, file encryption and shredding, and a licence for five PCs, Macs or Android devices (and up to 10) plus an option to get it installed and setup for you, presumably remotely.

The most recent version of the suite is Bit Defender Total Security 2019, which adds Ransomware Remediation, Network Threat Prevention, a new look dashboard and a more intelligent AutoPilot system.

Bitdefender is currently offering a a 50 percent discount which means you can protect up to five devices for £35 a year.

Note these discounts only apply to the first payment, but Bitdefender’s secret is simple: it’s very, very good at what it does.

• Bitdefender Total Security Multi-Device for $35.99 per year

2. Kaspersky Total Security 2019

Kaspersky is another name you’ll hear mentioned when talking about the top security players, and with good reason. If you look beyond the headlines, the company offers a seriously good protection package

Its Total Security product starts at £27.99 for one device, rising to £42 ($50) per year for five devices, with support for 10 devices and up to three-year subscription.

With Kaspersky Total Security 2019, smarter navigation makes it easier to understand the additional tools beyond the core functionality.

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Total Security protects PC, Mac, iOS and Android devices, with very solid security scanning supplemented with file backup and encryption, password management, parental controls and child safety measures, along with privacy protection, including a VPN for trace-free browsing.

• Kaspersky Total Security for $49.99 per year

3. McAfee LiveSafe

At £89.99 or $94.99 per year, the Intel-owned LiveSafe isn’t the cheapest product out there, but it’s particularly user-friendly. There are parental controls and anti-spam, password management and identity protection, website scanning and a guaranteed 100% virus removal or your money back. The licence covers unlimited PCs, Macs, phones and tablets, although as with any such suite the PC gets all the toys while Macs and mobile get a subset of the main package.

• McAfee LiveSafe for $104.99 per year

4. Symantec Norton Security Premium

Norton Security Premium is usually £79.99 (around $110, AU$150) per year for up to 10 PCs, Macs, iOS and Android devices, but at the time of writing it’s just £39.99 (around $55, AU$75) – making it less than half the price of other premium suites.

Once again we have parental controls, identity protection and excellent malware scanning, and there’s also a useful Android feature that warns of dodgy apps – the biggest current source of Android malware. There’s a 100% virus removal guarantee, 25GB of cloud backup and a network firewall, but you don’t get a password manager or any system optimisation tools.

• Symantec Norton Security Premium 3.0 for $54.99 per year

5. BullGuard Premium Protection

Here’s another security suite with big discounts: BullGuard is usually £69.95 (around $100, AU$130) per year for 10 devices but is always available for cheaper. Once again the basic protection is enhanced – you get parental controls, anti-spam, identity protection, 25GB of online backup and automatic upgrades, and BullGuard also offers to warn you about inappropriate content on your children’s social media. There’s no password manager or support for mobile devices, but BullGuard is a solid offering for protecting PCs.

• BullGuard Premium Protection for $39.98 per year

6. Trend Micro Maximum Security

Oh look! Trend Micro is on sale! We’re starting to detect a trend here, and that trend would make us very wary of signing up for any security suite that isn’t currently offering a big discount on the RRP. You don’t want to be the only person who paid full price for a sofa, after all.

Trend Micro’s Maximum Security protects up to 10 PCs, Macs or mobiles for $59.95 or £29.95 per year (it’s usually $99.95 or £69.95), and the suite includes ransomware protection, identity protection, parental controls and a password manager. It also offers PC optimisation tools to speed up sluggish computers.

7. Avast Internet Security

Going beyond the call of duty

Avast is well known for its excellent free product, and its paid-for Internet Security starts at $47.99 (around £35, AU$65) per year for one PC. In addition to the core antimalware product you get router security, browser clean-up, password management, sandboxed downloads, DNS hijacking protection, secure browsing and anti-spam. It’s a very good product but it can’t help but look awfully expensive when everybody else appears to be offering double-digit discounting.

• Avast Internet Security for $47.99 per year

8. Panda Dome Advanced

Panda Security’s free tool has its supporters (it’s in our list of the best, for example), offering effective protection against threats but without offering too much in the way of added extras.

Panda Dome (re-branded from Panda Global Protection) alleviates that issue by providing all of the company’s security tools into a single suite. What you get included depends on whether you opt for the Essential, Advanced, Complete or Premium options.

All packages include AV capabilities, firewall and USB device protection, but if you’re willing to pay more you can get parental controls, password managers and even premium technical support. No matter which option you go for, PC, Mac and Android devices are all covered.

Prices range from £26.24 or $35.24 a year for Essential to £89.24 or $116.24 a year for Premium.

9. AVG Ultimate

Great for a large number of devices

AVG has done well from the freemium model, offering a very good package for nothing in the hope that it’ll drive sales of its paid-for products.

At $79.99 or £69.99 per year for unlimited Windows, Mac and Android devices, AVG Ultimate is good value for money, especially if you’re a small business with lots of different devices.

The suite also boasts one of the fastest malware scanners around – although in independent testing that speed meant it was found to be missing some potential threats.

There’s no password manager, secure browser or parental controls, but it’s a good option for protecting multiple PCs, Macs and Android devices.

10. F-Secure Total

Everything including the kitchen sink

F-Secure’s flagship product has three pricing options, to cover three, five or seven devices at $89.99/£79.99, $109.99/£99.99 and $129.99/£119.99 per year respectively.

That’s at the higher-end of the market, but you do get a lot of tools for your money including a private VPN for encrypted connections to Wi-Fi hotspots and to evade geoblocking.

In actual fact, F-Secure Total is two products bolted together: the F-Secure SAFE security suite and F-Secure Freedome VPN. The suite covers Windows, Mac, iOS and Android devices, although the Mac component is just virus protection.

• F-Secure Total Security and Privacy for $89.99 per year

What's the difference between antivirus and Internet Security?

Whereas antivirus (AV) software provides a basic level of protection for your system, Internet Security expands on capabilities such as scanning files and software, activity monitoring and vulnerability search with features tailored for Internet use.

Indeed, many Internet Security products are marketed as ‘suites’ because they contain several different programs that can be accessed by a single interface.

These might include a firewall, anti-spam controls, ad blockers, webcam protection, keylogger protection, parental controls and credit card safeguards. There might also be additional protection against web-specific types of malware such as spyware and adware.

However running so many different types of program might mean that Internet Security suites use more of your system resources than conventional AV.

Can I create my own free Internet Security suite?

There are many advantages to purchasing a premium Internet Security suite from a trusted vendor, but it is perfectly possible to create your own modular suite by picking the most suitable free products.

While this might mean you save money, it does mean you have to do much of the work yourself. You will have to identify the best components, whether its virus protection, firewall or backup software, and fix any problems yourself.

The more components you introduce will increase complexity and system resource use. You will also suffer from the pitfalls of using free services such as frequent adverts urging you to upgrade.

Using a premium Internet Security suite means the vendor integrates several services into a single package that can be managed from a single interface. What’s more, they might cover several different types of device and offer different tiers of protection.

What should I look for in an Internet Security suite?

All of the products on this list offer effective capabilities, so the difference is in additional capabilities. If there is a particular type of threat that concerns you, such as ransomware or phishing, check to see if there are specific protections included.

Banking safeguards, firewalls and parental controls are also areas you should consider – especially if there are multiple users on your computer. And of course, you should consider whether you need protection across multiple devices, such as smartphones.

The number of additional features and devices may impact cost though.

Finally, think about usability and the impact on system performance. Do you want a high level of customization or do you want an easy-to-use interface and do you want a program that is capable of fast scans or one that requires minimal system resources?

Let's face it..we're no closer to vanquishing the cyber-criminals and hackers that plague the internet than we were a decade ago. In fact, cyber crime actually grows significantly year after year. So it's clearly as important as ever to ensure that your computer and mobile devices are afforded the protection of the best antivirus out there. You may be most familiar with names such as Norton, McAfee and AVG - but are they really the best?

We've tested and reviewed the latest packages - both premium and free antivirus - from the biggest names in cyber security, so you can be confident that our recommendations can be trusted. More than 80 antivirus and security suites have been reviewed and re-reviewed by our experts, as of July 2019, to give you the very best solution to protect and secure your devices.

Best antivirus 2019: our top 5

Read on for detailed analysis of each best antivirus service pick

Creators of malware and viruses are always coming up with new ways to gain access to your PC and other internet enabled devices (with your mobile phone and tablet included). Luckily online software security companies are constantly updating their security software packages to protect against phishing scams, ransomware and all other types of viruses and malware.

Right now, we think that Bitdefender Antivirus Plusis the best antivirus available. It combines watertight security tools with an array of other excellent security features and is super easy to use, too - best of all, it also offers extremely good value for money. You can read more about what it offers below, together with Norton AntiVirus and Webroot SecureAnywhere that complete our top three.

If you’re looking for all-round protection against the latest cyber threats, then investing in the strongest programme is the best solution you can hope for - and we also have the best business antivirus plans if you're looking to take care of your company computers. That doesn't mean you have to start spending big money either, as our guide also gives you the best available prices for the best software. And if it's the best free antivirus that you're after, we have some top recommendations for you, too.

Or jump straight to:

The best antivirus 2019

1. Bitdefender Antivirus Plus 2020

Operating system: Windows only Maximum devices covered: 1 Stand out features: Ransomware protection and remediation, privacy tools, VPN, Safepay

Get a 50-60% discount on Bitdefender Antivirus Plus 2020
TechRadar's #1 rated antivirus in a world packed with loads of virus protection providers, and doesn't even cost that much more than free antivirus downloads.

Note: For our Bitdefender Antivirus Plus review, we tested the 2019 version. This was updated and renamed to 2020 in July this year.

Take a look at any rankings of big independent antivirus and Bitdefender's premium security products always rise to the top.

It tends to be reliable and accurate in its virus detecting, featuring web filtering to blocks access to malicious sites, a secure browser that keeps your online banking ans shopping transactions safe, and there's a password manager which auto-completes credit card details in web forms. It also scores high for its excellent anti-phishing module, which alerts you to malicious links in your search engine results and blocks access to dangerous sites.

There's also multi-layer ransomeware protection that heuristically learns the behaviour of such threats to keep you safe as well as the ability to scan all your linked devices via the Bitdefender Central mobile app.

There are one or two issues – it grabs more resources than average, and might conflict with some programs – but Bitdefender Antivirus Plus is still a likeable package which offers excellent detection rates, great performance, and more than enough bonus features to justify the price.

Bitdefender Internet Security builds on AVP and triples the number of devices covered plus offers anti-spam, firewall, parental advisor and file encryption features.

For a little bit more you can purchase the Bitdefender Total Security edition. It adds all of the above and covers up to five PCs, Macs, Android and iOS devices.

Get Bitdefender Antivirus Plus up to 60% off!
Great news! You can currently score up to 60% off our #1 rated antivirus. It's a special software treat for TechRadar readers. It means that fantastic virus protection for your PC is now even more affordable - check out the exact pricing in your locale below, or head to Bitdefender's US site if your country isn't listed:

• Australia: Get Bitdefender for AU$69.99 AU$35 a year
  

2. Norton AntiVirus Plus

Operating system: Windows only Maximum devices covered: 1 Stand out features: Advanced privacy security, financial security, global civilian intelligence network

Norton AntiVirus Plus is a top quality malware hunter which can automatically protect your PC all on its own.

The newly named product was introduced in April 2019 as a direct replacement for the old Norton AntiVirus Basic. Moving from 'Basic' to 'Plus' certainly sounds better, but it really only adds a couple of extra functions - more on which further down this article.

Norton offers plenty of tweaks, options and settings for those who need them, as well as features like a handy URL blocker that keeps you away from malicious websites. If that misses something, an excellent file reputation service heuristically recognises suspect downloads immediately. And if malware still finds a way through, intelligent behaviour monitoring uses its up to date virus definitions to quarantine threats at the first sign of trouble.

If you're a more hands-on type, you can easily run scans on demand. Maybe set up and save custom scans to check just the areas you need. Even schedule them to run at a particular time, but only if your system is idle, and it's not running on battery power.

So what does Plus do that Basic didn't? Only a couple of things really: it adds a bonus 2GB worth of cloud backup and a password manager. The latter is worth having if you've not got one already, but it can't match the power of Dashlane and other market leaders

There can be problems with some of the browser extensions. For example, we've found the Chrome version sometimes stops working for no apparent reason. We've seen plenty of reviewers reporting similar problems, so there does seem to be a real issue here.

That said, Norton AntiVirus Plus's main functions deliver on all fronts: it's easy to use, has the configuration options experts need, comes highly rated by the testing labs, and is carefully designed to have the least possible impact on your system performance.

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3. Webroot SecureAnywhere AntiVirus

Operating system: Windows and Mac Maximum devices covered: 1 Stand out features: Always-on security, identity protection, real-time anti-phishing, firewall monitor

Just about every antivirus tool claims to be ‘lightweight’, but Webroot SecureAnywhere AntiVirus is the only one to really deliver on this front. Installation takes seconds, the program files barely grab 2MB of your hard drive, RAM footprint is tiny, and there are no bulky signature updates to tie up your bandwidth.

There's no compromise on features, though. Along with the core protection, there's smart behaviour monitoring, accurate real-time antiphishing, a firewall and network connection monitor, enhanced anti-ransomware, and other interesting extras.

It's not easy to compare Webroot's accuracy with the competition, as the big testing labs rarely evaluate the company's products. But when they are reviewed, they generally score well, and our own tests show solid and reliable protection.

There's a lot to like about SecureAnywhere AntiVirus, and Webroot's 70-day 100% money-back guarantee suggests it's confident in the product, too. If you're tired of overly complicated and bloated engines, Webroot must be on your shortlist.

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4. ESET NOD32 Antivirus

Expert-level antivirus for the more experienced user

Operating system: Windows only Maximum devices covered: 5 Stand out features: Ransomware Shield, UEFI Scanner, Exploit Blocker, cloud powered scanning

If you judge antivirus software on the length of its feature list, ESET NOD32 Antivirus might be a disappointment. There’s no firewall, password manager, file shredder, vulnerability scanner or any of the bundled extras you'll often find elsewhere.

This doesn't mean the package is short on power, it's just more focused on the fundamentals. ESET NOD32 Antivirus comes with real-time malware protection, some of the best heuristic detection around, an anti-ransomware layer, exploit protection, URL filtering to block malicious websites, and modules to prevent attacks using PowerShell and malicious scripts.

A Device Control module limits the risk of infection from other devices by controlling access to USB sticks, external hard drives, optical storage media, even devices connecting by Bluetooth and FireWire. It's an unusual extra, but could make a difference if others are regularly plugging devices into your PC.

ESET NOD32 Antivirus isn't aimed at beginners. The interface is clumsy sometimes, some features are very advanced, and even the Help isn't always exactly helpful.

Experienced users will appreciate ESET’s power and configurability, though. Above-average protection does a good job of keeping you safe, and a lightweight design ensures the package won't slow you down.

One of the new features in the latest update is the UEFI Scanner which protects you from threats that attack your PC before Windows has even started.

ESET Internet Security builds on NOD 32 and triples the number of devices covered plus offers firewall, botnet protection, webcam protection, antispam and more.

Alternatively, you can purchase the ESET Smart Security Premium edition for not much more. It adds all of the above as well as password management and secure data.

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• Best dealESET Smart Security Premium (1 year, 1 device for $59.99)

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• Best dealESET Smart Security Premium (1 year, 1 device for £49.99)

5. F-Secure Antivirus SAFE

The most easy to use antivirus option

Operating system: Windows, Mac, Android, iOS Maximum devices covered: 3 Stand out features: Browsing and banking protection, Family Rules, ransomware protection

F-Secure Antivirus SAFE is a great collection of antivirus tools, and while it's a bit more expensive than some of the other programmes on this best of list, the amount of features you get makes the cost worthwhile.

With F-Secure Antivirus SAFE, you get the brilliant antivirus software from F-Secure, along with banking protection for safe online shopping, family safety tools and a device finder that lets you track your lost Android or iOS device, and if needs be remotely lock or delete it as well.

The package typically receives maximum marks for protection from AV-Test, and generally scores highly with AV-Comparatives, too. They also say it can generate significantly more false positives than most of the competition, but how that affects you will vary depending on how you use your computer.

The interface is a major plus. It's extremely easy to use, lightweight, and for the most part you can just leave the app alone to look after your PC. The program has minimal effect on your system performance, and if you do need to intervene then you can generally solve any issues in a couple of clicks.

In 2018, F-Secure Anti-Virus SAFE remains an appealing package: fast, lightweight, and able to run alongside many other security tools without conflict - you can read more about the company's offering with our F-Secure Anti-Virus review of its slightly lighter product.

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6. Kaspersky Anti-Virus

Operating system: Windows only Maximum devices covered: 5 Stand out features: Automatic scans, drive-by cryptomining infection prevention, simplified security management

Top Rated Internet Security 2018

Kaspersky Anti-Virus is a stripped-back security package which focuses on the core security essentials: web filtering blocks dangerous URLs, an accurate engine detects and removes threats, smart monitoring technologies track and reverse malicious actions, and that's about it.

Fortunately, what you do get works well. Very, very well. We've consistently found Kaspersky to be amongst the best at blocking malware, and removing it from an infected system, plus it's regularly top-rated at sites like AV-Comparatives.

The program is easy to use, too. A well-designed interface has just the right number of buttons and options – not too basic, but not complicated or intimidating, either – and there are plenty of on-screen instructions to explain how everything works. Even a beginner will be at home right away.

If you just need accurate, reliable and consistent malware protection, Kaspersky Anti-Virus will serve you well.

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7. Trend Micro Antivirus+ Security

Operating system: Windows only Maximum devices covered: 1 Stand out features: Ransomware protection, advanced AI learning, email scam safeguarding, Pay Guard

Trend Micro Antivirus+ Security is a very capable package that's simple to use with above average antispam and an effective ‘Folder Shield’ module to block ransomware. And it seems to get better and better as time goes on.

How good is it exactly? The top testing labs all rate it highly for protection, although there's some disagreement on the details. In particular, AV-Comparatives says it gives a high number of false positives, which could be a real nuisance. But AV-Test reports high levels of accuracy and no issues with false positives at all.

If there's a problem here, it's likely to be performance impact. PassMark's March 2019 Performance report assessed 14 security products on various performance-related benchmarks, and Trend Micro came towards the bottom part of the list.

Our experiences with the product are a little more favourable: protection levels appear similar to Bitdefender, false positives are only marginally higher, and it doesn't slow down our system noticeably more than anything else.

We'd recommend running the trial for its full 30 days before you buy, then, to see if you notice any problems. But if you're unaffected, its high levels of detection and excellent bonus features make Trend Micro a good choice.

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Best Internet Security For 2018

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8. Panda Dome Essential

Operating system: Windows only Maximum devices covered: Unlimited Stand out features: Process monitor, URL filtering, bootable USB rescue drive

Real-time malware detection, speedy cloud-based scanning, URL filtering to block malicious websites: Panda Dome Essential antivirus has all the goodies you'd expect from the best antivirus software.

That's just the start. Panda Dome is jam-packed with added extras that some of the other plans on this list don't match. From port scanning and ping handling to in-depth process monitoring and an integrated VPN.

When it comes to the main event - virus protection - there's not a lot of Panda test results from the independent labs around right now, but the figures we've seen don't exactly fill us with confidence as Panda came towards the bottom of the pile according to AV-Comparatives. This doesn't mean that Panda Dome will put your devices in harm's way, but you can understand why we'd recommend other providers over it on this basis.

The interface will be a little bit decisive, too. With so many weird and wonderful features included, Panda Dome does a very capable job of making sure that they can all be accessed and you can go as in-depth as you need. But on the other side of the same coin, this might put off users who just want a quiet, simple antivirus package.

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One undoubted bonus is the price - Panda Dome Essential is one of the best value programs out there. And you even have the option of paying a little more and upgrading to cover an unlimited number of laptops, phones, tablets and desktops with a single subscription.

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• Apple user? Then you can head to our bespoke best Mac antivirus guide
• We’ve also looked at the best secure messaging apps
• Check out the best Android antivirus apps for your phone

Best free antivirus downloads

Paying for a premium service means you get more features, such as spam filters, parental controls, system scans and advanced firewalls. This makes them more suitable for power users, those who want a bit of extra security and anyone who wants their system to run as smoothly as possible. It also means you avoid annoying pop-ups that try and tempt you to upgrade to the full version. And, as you've discovered above, they don't really cost too much to buy

But these days you can get top quality protection absolutely free, with just about every single major vendor out there offering a free antivirus. By doing so, developers gain access to more devices from which they can collect data and therefore improve their knowledge and security platforms, so it’s not in their interest to reduce the amount of protection provided by the free version.

Windows has come a long way in terms of security, but it's still fair to suggest that Windows 10's built-in solution, Windows Defender, is the last free AV app you should trust to keep your system clean.

So if you're determined to get free antivirus, we strongly suggest that you check out our list of best security downloads in 2019 below. We've highlighted their features -and shortcomings - to ensure that you pick out the best one.

1. Bitdefender Antivirus Free Edition

The best free antivirus scanner in 2018

Operating system: Windows, Mac, Android Version: 2018 Features: Phishing protection, Behavioural analysis, Automatic scanning

Essentially consisting of the AV section of the full product, Bitdefender Antivirus Free Edition's clean, light, well constructed scanning mechanisms – which are almost universally faster than the industry average – and unrivalled virus definitions mean Bitdefender is back at the top of the free tree.

The free version's insistence on running in autopilot mode is a double-edged sword, making the process of virus management easy but taking it out of the user's hands; while we're inclined to trust it, there have been cases in the past of automatic systems going slightly rogue, such as the incident a few years back when Panda Antivirus identified itself as a virus and locked up a large number of Windows systems.

AV-TEST's testing did pick out a few flaws in its handling of zero-day threats, however. And it's worth pointing out that for you can currently get our top rated paid-for solution - Bitdefender Antivirus Plus - for the equivalent of around $2 per month. That's a tiny amount to pay for a tonne of extra features, such as online banking protection, integrated password manager, permanent file shredder and and free online 24/7 support.

Review and where to download: Bitdefender Antivirus Free Edition

2. Avast Free Antivirus

A much-improved free antivirus suite

Operating system: Windows, Mac, Android Version: 17 Features: Virus detection, Gaming mode, Password manager, Malware scanner

Best Internet Security Software 2018 For Mac

Avast and AVG haven't yet fully merged, despite the former formally acquiring the latter in mid-2016. The newly combined company says the two free antivirus products will remain separate, although there's apparently a joint AV package on the way soon. Obviously, though, Avast now has a lot more data to work with, having expanded its effective userbase (and, therefore, its threat detection network) to a whopping 400 million users.

The latest edition of Avast Free Antivirus adds an automatic gaming mode to mute popups and reduce system load when you're firing up a processor-hungry game, which is very handy indeed, and the interface has been given a clean new overhaul. There's a password manager, too, which is an undeniably good addition to your security portfolio.

It scores well on AV-TEST's widespread malware benchmark and continues a clean sweep against 0-day attacks – presumably that expanded detection network is really helping. Less impressive is the slight negative effect Avast has on software launch times, and its slightly popup-heavy attitude.

Review and where to download: Avast Free Antivirus

3. Sophos Home

The perfect choice for a home full of PCs

Operating system: Windows, Mac Version: 17 Features: Virus detection, Phishing protection, Parental controls, Protects up to 10 PCs

Marketing itself as 'business-grade security', Sophos Home does a little more than most free antivirus software, and actually seems better suited to families.

You get standard virus protection and anti-malware protection, along with browser tools like anti-phishing and, most importantly, content control. Combined with central management of up to 10 PCs, this means you can effectively lock down your kids' browsing options.

Although AV-TEST hasn't formally assessed Sophos' skills, fellow lab AV-Comparatives offers a decent rating of its abilities.

Although Sophos Home has always had desktop notifications, there was no premium version of the software for it to encourage an upgrade to. That changed in February with the launch of Sophos Home Premium.

Review and where to download: Sophos Home

4. Kaspersky Free

Best Internet Security For Mac 2018 Football

Kaspersky's first foray into free internet security

Operating system: Windows Version: 18.0.0.405 Features: Real-time scanning, Anti-phishing, Email scanning, Spyware protection

The paid-for version of Kaspersky's Windows security software frequently tops charts of best virus prevention solutions and AV-TEST once again gave it full marks across the board in its latest round of testing.

As you would expect, Kaspersky Free is a scaled down version of the full program - a tool that we really like (more on which below). The free version ditches additional features such as privacy protection and safe payment sandboxes to concentrate on powerful, no-frills and - most importantly - free protection for your PC. The result is a tremendously easy to use and navigate bit of software that does an effective job of keeping you protected from viruses.

Using the nuts and bolts real-world scanning engine of the paid-for suite, Kaspersky Free is fiendishly hard for viruses and trojan horses to break down. And we love that it doesn't constantly pester you with nudges to upgrade to the full version.

But, ironically, we will just for a moment, because Kasperksy Anti-Virus 2018 isn't expensive to buy and yet affords much better protection to your PC (or PCs). The standard price is $29.99 to protect three computers and includes more muscle when it comes to preventing ransomware, spyware and Trojans.

Review and where to download: Kaspersky Free

5. Avira Free Antivirus

Great antivirus, but a little noisy for our liking

Operating system: Windows, Mac, Android, iOS Version: 2018 Features: Virus detection, Phishing protection, Built-in VPN, System optimization tools

Avira Free Antivirus for Windows continues to score highly on AV-TEST's stringent testing program, quashing 99.7% of tested threats, and it generally doesn't put too big a burden on your hardware.

It has a clean, friendly interface - with a swish redesign ready for 2018 - and throws up minimal false positives. The introduction of a free security suite to optionally run alongside it – with ransomware and phishing protection, a 500MB/month VPN and various speedup promises – just sweetens the deal. This is one of the best free antivirus packages of 2018.

So why, then, have we dropped it from the top spot on our list, a position it's held for the past two years? It's the constant badgering. There's a certain level of popups and advertisements that's acceptable for a free product, and Avira has begun to cross the line. It's not as onerous as some – Comodo's over-enthusiastic interface comes to mind – but booting up your PC to see Avira shouting at you once again is jarring.

Review and where to download: Avira Free Antivirus

Best business antivirus

Each entry in this list has been carefully chosen for its business features, such as remote installation and central management. The best business antivirus software will have enterprise-level protection against threats, but that doesn't mean they have to cost a lot of money, either. The price per installation can sometimes be cheaper than even our recommended best antivirus packages.

An excellent business antivirus suite, giving you various tools such as virus protection, Firewall, email protection, anti-spam and the ability to sandbox applications for complete security. Avast Business Antivirus Pro (as opposed to the standard Avast Business Antivirus) also includes Sharepoint and Exchange protection, as well as a number of tools for your servers.

Symantec's first benefit is the company's Insight file reputation technology, an effective way to detect and block even the very latest undiscovered threats. Other layers of protection include virus protection, behaviour monitoring, intrusion protection, a firewall, and the 'Power Eraser' to remove stubborn threats and repair your system.

This package makes reliable protection its top priority. Bitdefender products are loved by the independent testing labs, highly rated for malware detection, removal, performance and usability. Most of the features work automatically – anti-malware, firewall, web advisor, URL filtering – but you can also customise the product to control user actions.

This is Avira's main small business product. It takes all the core features you'd expect – antivirus, baseline network protection, web filtering – and extends them with file server protection and optimisation, along with application whitelisting and blacklisting.

A small business product, which comes ready to protect Windows PCs, file servers, Android and iOS devices. The desktop side of the package has all the usual quality Kaspersky modules – antivirus, antispam, a firewall, more – but the mobile security technologies are even more impressive.

• Even if you own the best computer in the world, you're still at risk