The basic job of security software is to passively stand guard, protecting your devices against malicious software (known as malware) that can leave you vulnerable to scams and other criminal activity.
But is paid antivirus protection any better than free software? We explain why our lab tests show that there isn't as much difference as you might think. To see which free software gets our Best Buy recommendation, you can get 50% off a Tech Support annual membership until 30 September.
Source: Which? (25 Sep 2025)
