Windows Live OneCare 2.0 (Up to 3 Users) All-in-one security for up to 3 Users from Microsoft protects personal and financial documents from the latest viruses, worms, hackers, spyware, and online identity scams Automate "janitorial tasks," including disk cleaning and defragmentation, to help improve PC performance Easily back up your files to a CD, DVD, external hard drive, locally networked computers, or most USB-connected storage devices Protect your PC from outside security threats while keeping things on the inside running smoothly Works with Microsoft Update to help ensure that your computer is up-to-date with the latest security and critical updates