In a world where ransomware is an existential threat to businesses and banking-related Trojans and phishing attacks can drain your checking account in minutes, you want every edge. Even if the difference is small, it's still an improvement. A roundup of the best software and apps for Windows and Mac computers, as well as iOS and Android devices, to keep yourself safe from malware and viruses.īut for some picky PC users, replacing the basic built-in antivirus protection with software from an outside developer is just natural when setting up a new Windows PC.