I'm writing a novel about a woman who hides files because she fears that other people may access information she wants to keep secret.
Mary Lou doesn't follow a precise method for hiding files in hard-disks, but she does so with excessive zeal.
So, as ever, I would like to know whether there is an adjective to describe Mary Lou.
After a bit of searching I found that bibliotaph means 'one that hides away or hoards books', but, alas, it seems that one can properly uses this word only in reference to books, not files.
So, I wonder, what do you call someone who hides away files?