Norton Internet Security 2010 1-user Norton Internet Security 2010 delivers fast and light comprehensive online threat protection, Guarding your PC, network, and your identity without slowing you down Gives you greater insight into downloaded applications. And files by telling you where they came from, if they can be trusted, and how they may impact your PC's resources and performance Proactively blocks hackers and prevents dangerous software from downloading to your computer when you surf the web