The DLP 15.8 Administrator's Guide is not available for download on the support portal.
How can the DLP 15.8 Administrator's Guide be downloaded?
Release : 15.8
As of DLP 15.8 the Symantec DLP Administrator's guide is no longer available on the support portal.
The information that was in the Administrator's Guide is now in the 'Symantec Data loss Prevention Help Center'.
You can download a PDF of the Help Center/Administrator Guide using these steps: