You can configure Symantec Protection Engine to obtain uncertified definition updates with Rapid Release. You can configure Symantec Protection Engine to retrieve Rapid Release definitions every 5 minutes to every 120 minutes.
Rapid Release definitions are created when a new threat is discovered. Rapid Release definitions undergo basic quality assurance tests by Symantec Security Response. However, they do not undergo the intense testing that is required for a LiveUpdate release. Symantec updates Rapid Release definitions as needed to respond to high-level outbreaks. Rapid Release definitions might be made available before the LiveUpdate definitions quality assurance process is complete. Rapid Release definitions provide a quick response to new threats and security risks. You can augment Rapid Release definitions later on by more robust detection capabilities in certified definitions.
Rapid Release definitions do not undergo the same rigorous quality assurance tests as LiveUpdate and Intelligent Update definitions. Symantec encourages users to rely on the full quality-assurance-tested definitions whenever possible. Ensure that you deploy Rapid Release definitions to a test environment before you install them on your network.
If you use a proxy or firewall that blocks FTP communications, the Rapid Release feature does not function. Your environment must allow FTP traffic for the FTP session to succeed.
The Rapid Release definitions that are downloaded are automatically selected as the active definitions. However, you can revert to the previous version of the antivirus definition set. The definition set that you choose remains active until the next definition update runs.