Specifically designed for such situations, Norton AntiVirus Virus Definitions deploys a package containing the latest virus signatures issued by Symantec, which can be manually installed for various security products. However, even if an Internet connection is not available, having the signature database updated is a must. Reputable antivirus and protection tools enclose a built-in definition updater to make sure users get the latest signatures, provided their PC is connected to the Internet.
Any security software applications are vulnerable if the virus signature database is not up-to-date, which might result in infections of the hosting system.
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