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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.
Need to update your
Symantec products?
A valid support contract is required to obtain the latest content. To renew your product license, see the License Renewal Center.

File-Based Protection (Traditional Antivirus)

Definitions Created: 05/03/15
Definitions Released: 05/03/15
Extended Version: 05/03/15 rev. 3
Definitions Version: 170305c
Sequence Number: 162198
Number of Signatures: 34,103,552
Details: Release History
Download: Definitions  

Network-Based Protection (IPS)

Extended Version: 03/03/15 rev. 1
Details:
Download: Content is downloaded by your product via LiveUpdate.

Behavior-Based Protection

Tamper Protection
Download: Content is downloaded by your product via LiveUpdate.

Norton Product Support

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