Data control list
This feature requires a subscription. It can be configured but cannot be enforced without a valid Email Protection subscription.
This feature is available in Cyberoam models CR15iNG and above, and all Sophos UTM and Sophos Firewall models.
You can create a data control list of confidential data by selecting from the content control list (CCL). The firewall provides CCLs based on expert definitions for common financial and personally identifiable data types. For example, credit card and social security numbers, postal and email addresses.
Subsequently, you can use data control lists to set data protection for emails.