I need to mask sensitive PII fields (email, user name, ip ...) inside Kibana
This sensitive PII data should be stored without any manipulation in Elasticsearch but should be masked on Kibana UI
I already uses similar functionality for Kafka Lenses
https://help.lenses.io/using-lenses/data/data-policies/#:~:text=Mask%20Kafka%20data,4%20characters%20of%20the%20value.