This advanced technology comes to users completely free, providing high quality security protection at no cost. Avast has the largest threat-detection network, with machine-learning virus protection and home network scanners.Īvast uses 6 layers of defense to keep users safe: Web Shield, Static Scanner, Emulators, Deep Screen, Cyber Capture and Behavior Shield. With over 435 million product users over the globe, Avast has over 30 years of experience meeting users’ needs for security, privacy and performance.