Norton AntiVirus was engineered around the Intelligent Threat Protection concept: its core technology, the Norton Protection System, uses multiple layers of security that work together to proactively block attacks and remove threats - something that traditional virus detection methods cannot achieve. In addition, all downloads, files and applications are checked before you can use them on your computer. Security holes in your operating system and browser are guarded so no infections can get to you that way. Your emails and Instant Messages are always scanned to detect potential threats.
Norton AntiVirus has top-notch performance: fast and light on system resources, it uses Norton Insight to scan only files that are at risk. This means fewer scans and therefore better PC performance. ItsSmart Scheduler feature initiates scans only when your PC is idle; Silent Mode is engaged automatically when playing games or watching movies so that alerts, updates and scans are delayed until you are done; for laptops, Power Saver Settings delay power-hungry activities until your computer is plugged in.