As you suggested, you can use the JoltTransformJSON processor to "flatten" your JSON, but if your use case is as simple as the provided example (where the fields are one level down), you could also use EvaluateJsonPath with the target set to flowfile-content and the JSONPath expression set to $.Person ... View more

With the ExecuteScript processor, you are likely just adding Dynamic Properties (also known as User-Defined Properties), which are not sensitive. To add your own sensitive properties to a scripted processor, you would need to use InvokeScriptedProcessor. There's an example from the NiFi mailing list (though not with sensitive properties, you'd just need to add .sensitive(true) to your PropertyDescriptor.Builder, and I have another example (with no added properties) on my blog. ... View more