The first part of a data loss prevention (DLP) implementation involves inventory. Of your data, that is — because, quite simply, you can’t protect it if you don’t know it’s there.
So the first thing DLP does is discover where your sensitive data resides. The right DLP capability can sift through file servers, databases, documents, email, and Web content to discover sensitive data wherever it resides and tag it so it can be tracked wherever it goes.