Hi Paul,
Please do avoid posting the same thing in different forums:
http://moodle.org/mod/forum/discuss.php?d=160912#p877364
--- reference
http://docs.moodle.org/22/en/Moodle.org_forums_Code_of_Conduct#Post_your_question_in_one_forum_only
Security and privacy
How to secure the Data Root for Moodle files?
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