Total Defense Unlimited Internet Security is an easy-to-use, all-in-one PC and mobile monthly subscription security offering for unlimited users and devices. designed specifically for home and home office users, Total Defense Unlimited Internet Security offers comprehensive PC optimization to eliminate slow startups and keep your computer operating at peak performance, cloud-based online backup with anytime, anywhere access to your important files, and real-time protection against virus and spyware for PCs, mobile phones and tablets. Total Defense Unlimited Internet Security also introduces some industry-leading enhancements in anti-phishing, anti-spam, and automatic USB scanning technologies.