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Virus Definitions & Security Updates

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)

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 Created: 3/4/2015
  • Definitions Released: 3/4/2015
  • Extended Version: 3/4/2015 rev. 1
  • Definitions Version: 170304a
  • Sequence Number: 162166
  • Number of Signatures: 34,001,535

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