My organization is in a data discovery phase where our objective is to find and tag the data we keep on-premise. The class of data we're most interested in is, unsurprisingly, personal data–names, addresses, email addresses, IP addresses, credit card numbers, national identification numbers, so on and so forth.
We've engaged in an exercise where we've interviewed representatives of each department and have documented data fields and interaction between systems, so we have some idea of how our data is governed, but it is imperfect and would likely be insufficient in the event of an audit.
I'm wondering if there are tools out there that can scan our systems, hunt down the data we're looking for, tag it, and map the relationships between the different systems that we use to track data transmission.
What would be the best way to go about completing this task?