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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: 29/05/17
Definitions Released: 29/05/17
Extended Version: 29/05/17 rev. 19
Definitions Version: 190529s
Sequence Number: 185561
Number of Signatures: 7,568,899
Details: Release History
Download: Definitions  

Network-Based Protection (IPS)

Definitions Released: 26/05/17
Extended Version: 26/05/17 rev. 1
Details:
Download: Content is downloaded by your product via LiveUpdate.

Behavior-Based Protection

Definitions Released: 24/05/17
Extended Version: 22/05/17 rev. 3
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.