Open Safetica console and go to DLP - Data categories section
Select New data category then choose Sensitive content and enter a name for the category (e.g. "content test"). Click OK. Next click the checkmark icon in the upper right corner to save the category.
Next click on Configure data category. When you click on New detection rule you can select either predefined sensitive content as birth numbers, or credit card numbers or create your own keywords and regular expressions and click ok.