Virus Definitions & Security Updates

To stay secure you should be running the most recent version of your licensed product and have the most up-to-date security content. Use this page to make sure your security content is current.
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File-Based Protection (Traditional Antivirus)

File-Based Protection
Traditional signature and heuristic file scanning engines form the backbone of Symantec’s security solutions; these engines use dozens of techniques to scan files for both known as well as unknown threats.
Definitions Released: 5/29/2017
Download: Content is downloaded by your product via LiveUpdate.

Network-Based Protection (IPS)

Network-Based Protection
Technologies designed to block attacks just as they transition from the network cable or wireless network to the computer, before they have a chance to establish residency in a physical file on a user’s computer. Also called Network Threat Protection.
Extended Version: 5/25/2017 rev. 1
Download: Content is downloaded by your product via LiveUpdate.

Norton Product Support

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