Norton AntiVirus 2013 for PC provides first-class protection for your Windows-based computers. This upgrade version is compatible with Windows XP, Windows Vista, and Windows 7, and includes one year of updates to detect the latest viruses. It is supplied with a licence to install the upgrade on up to 3 household computers. Norton AntiVirus 2013 doesn't only fight viruses - it also defends against spyware and bots. Protect your computer from online threats while maintaining a fast and responsive system, thanks to Norton's Insight Network. This uses real-time online intelligence for faster, fewer, shorter scans. Whether you use a notebook or desktop PC, Norton AntiVirus 2013 can help keep your data and identity safe from malicious intrusions via your internet connection. It's a small price to pay for peace of mind at the computer for you and your family!