About the scripting language

Symantec Data Loss Prevention
provides a scripting language that you can use to detect custom file types and to validate custom data identifiers. You can deploy custom scripts for both the server and endpoint agent detection. You can extend the language using pre-built functions.
Detection features that support scripting
Feature
Description
Custom File Type Signature detection
The DLP Scripting Language lets you write a script that detects the unique bytes of a custom file type.
Custom script validators for Data Identifiers
The DLP Scripting Language lets you write a script to validate patterns in a message.