Norton AntiVirus defends your PC against detected viruses, spyware, bots, worms, and more while minimising the performance impact or getting in your way. The improved Norton Protection System features multi-layered protection technologies that work together to proactively block attacks and detect and remove threats before they can harm your PC.

Intrusion Protection defends your PC from web-based attacks so yEnter your state hereou can surf with confidence. And new Vulnerability Protection blocks security holes in your PC’s operating system, applications, browsers, and browser plug-ins to prevent hackers from exploiting them.

How to download and install a Symantec Norton AntiVirus Definition update:

Check whether your version of Windows is 32-bit or 64-bit. In the table left, click on the link that will work for your version of Windows. Save the file to your Desktop. When the file has finished downloading, go to your Desktop and double-click the file. Follow the prompts to install the update.

Supports the following versions of Symantec antivirus software: