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)

Definitions Created: 24/11/15
Definitions Released: 24/11/15
Extended Version: 24/11/15 rev. 3
Definitions Version: 171124c
Sequence Number: 170280
Number of Signatures: 38,999,066
Details: Release History
Download: Definitions  

Network-Based Protection (IPS)

Definitions Released: 23/11/15
Extended Version: 23/11/15 rev. 1
Download: Content is downloaded by your product via LiveUpdate.

Behavior-Based Protection

Definitions Released: 17/11/15
Extended Version: 13/11/15 rev. 1
Download: Content is downloaded by your product via LiveUpdate.

Reputation-Based Protection (Insight)

Latest Published Content:
Download: Content is accessed by your product via the Symantec data cloud.

Norton Product Support

Guidance and information concerning downloads, subscriptions, renewal, activation, and more.