Alex,
There are many different use cases for Network Discover. I will review some of the major ones that aour customers do. Keep in mind that each case depends on the type of data you are looking for.
1. Scanning of file servers and Repositories for specific Conetent (PCI, SSN, CCN etc) and making sure that this type of data is stored in the right place or is NOT located in a specific location. ie. There are no CCN in athe Public file Share, if it is move it to a secure location.
2. Archiving of files older than a specific date. This allow data clean up of files which are not in use. (Last accessed date)
3. Validating Audits. PCI audit, making sure that CCN or Mag stripe data is not located on file servers etc.
Hopefully this is helpful, the idea is to use Network discover to find specfic data and make sure its not exposed or accesablie by the wrong people.
Ronak Patel
DLP Product Management