Kaspersky Internet Security and Security Cloud It can be very expensive when you renew, however, so it will need to put in a strong showing to prove it’s worth the cash.

You’ll find Norton pre-installed on lots of laptops and it’s a popular choice in high street retailers. We’ve put it through its paces, along with Avast’s paid-for options. It might be light on features, but as long as it gets the basics of security and anti-phishing right, it could prove to be an excellent choice. Avast Free AntivirusĪvast is one of the best-known antivirus companies that offers a free edition of its software. So if you have Windows, it may be prudent to look for a more extensive package that covers as wide a range of threats as possible. Windows is by far the most threatened operating system (OS), due to its dominance in the market – it was the target of more than 80% of all malware in 20 (the latest years we can find data on). Show full table Popular antivirus for Windows Not yet a member? Join Which? to unlock our antivirus results, along with all of our online reviews, including laptops, tablets and mobile phones. Which? members can log in to see the full results. So you need to make sure that the software you install is one of the best programs, which you can do by using the results of our tough, independent lab tests. But be careful – we've found that some free options are annoying to use, have irritating pop-ups and quite simply aren't as good as rivals when it comes to protecting your devices.

You can save yourself up to £145 a year by choosing a good free antivirus program. Have a Mac? See our expert pick of the Best antivirus for Macs Best free antivirus software So unless you want extra features or extra piece of mind, opt for one of our best free antivirus programs. We know that free and paid-for versions of the same software have the same protection. Thanks to our test results, we can also save you money. This means that you can be confident that any program we say is the best, really is. We repeat this four times a year, as new threats are emerging all the time. To find the very best antivirus software for your PC, we bombard free and paid-for antivirus software with tens of thousands of threats in our tests, including viruses, ransomware and phishing attacks designed to compromise and steal data. Find out which program meets your needs by using the results of our in-depth antivirus lab tests. Looking for the best free antivirus software? You've come to the right place.

Best free malware scanner