@Nyk    That is correct, dynamically added properties are all of type non-sensitive. You would need to build a custom processor with static configurable properties that have a PropertyDescriptor with ".sensitive(true)". I am not a developer myself, but you may find this resource useful: https://itnext.io/deep-dive-into-a-custom-apache-nifi-processor-c2191e4f89a0 If you found my answer addresses your question, please click on "Accept as Solution" below the answer. Hope this helps you, Matt ... View more