Bitdefender Premium is the best overall antivirus software for 2026, according to expert testing by David Phelan. It offers strong performance, comprehensive features, and a light impact on system speed.
Expert Testing Methodology
David Phelan, a tech expert with years of experience, tested each antivirus program on a Windows laptop and a Mac. He evaluated installation time, scan speed, system slowdown during scans, ease of navigation, and the intrusiveness of upgrade prompts. He also reviewed findings from independent security testing labs and compared pricing structures, noting that many programs have low introductory rates that increase significantly after the first year.
Bitdefender Premium: Best Overall
Bitdefender Premium costs £49.99 for the first year and £99.99 annually thereafter, covering up to five devices. It includes antivirus, a password manager, scam protection, unlimited VPN traffic, anti-tracker, and email protection for two addresses. The installation was quick and easy, though slightly more fiddly on Mac than PC. Scans had a very moderate impact on system performance, and the anti-tracker was especially effective. The free version still offers core antivirus protection. Supported platforms: Windows, Mac, iPhone, Android.
Surfshark One: Best Interface
Surfshark One bundles antivirus with a VPN, data breach alerts, and webcam lock. Pricing starts at £1.99 per month for a 27-month plan. The initial scan on Mac took about 40 minutes with no noticeable slowdown. The interface is the most elegant among tested programs, with a clear dashboard and helpful tips. Antivirus protection is solid on Mac, Android, and Windows, while additional services like VPN and Alerts extend to iPhone. It lacks parental controls and a password manager. Supported platforms: Windows, Mac, iPhone, Android, plus Linux, Chrome, Firefox, Edge, Apple TV, Fire TV for VPN.
Norton 360 Deluxe: Best for Beginners
Norton 360 Deluxe costs £29.99 for the first year and £89.99 thereafter, covering five devices. It features AI-powered scam protection, a smart firewall, VPN, and deepfake protection (limited to Windows with Qualcomm Snapdragon X and Copilot+). Installation is straightforward, with guided setup for advanced features like dark web monitoring and cloud backup. Scans do not slow down the computer, and Norton consistently excels in independent performance tests. The interface is less slick than Surfshark but still user-friendly. Supported platforms: Windows, Mac, iPhone, Android.
Avira Free Security: Best Basic Option
Avira Free Security is free and covers unlimited devices. It offers basic privacy settings, malware block, and password generation. Installation was the fastest tested, and the first scan was quick with minimal system impact. However, it includes frequent upgrade prompts, and the free VPN is limited to 500MB of traffic per month with no location choice. Windows users get a software updater that requires a paid upgrade to automatically update drivers. Supported platforms: Windows, Mac, iPhone, Android.
Avast One: Best Free Option
Avast One is free for one device and includes antivirus, cleanup, and breach guard. Installation was extremely fast. The first scan found and resolved malware issues, but also flagged advanced issues like at-risk browser passwords and no webcam protection, accompanied by upgrade prompts. The modular design allows adding free or paid tools individually. Premium Security costs £39.99 for the first year and £64.99 thereafter, blocking scam SMS and calls. The Ultimate tier at £42.49 first year and £89.99 thereafter includes VPN, clean-up premium, and anti-track. Supported platforms: Windows, Mac, iPhone, Android.
How to Choose the Best Antivirus Software
All tested packages offer strong protection, with most providing free trials. Bitdefender is the best all-rounder, while Surfshark is effective, affordable, and visually appealing. Avira and Avast One offer strong free options, but users must resist constant upsells. According to Phelan, the key balance is between features and system performance: protection should not come at the cost of speed and convenience.
