Question on font use and licencing for epub using Adobe Originals

hi there

I am looking to use a Adobe Original font (part of my CC subscription) in an ereader/ePub, which will allow offline access to the ePub via an app. Looking at the additional FAQ's it states 'The fonts are licensed for embedding in any ebook format which protects the font data such as EPUB, iBooks, Kindle (mobi), Adobe’s Digital Publishing Suite (DPS), and PDF.'  What "Protection" is this referring to explicitly? If the user has access the ePub file, does this mean they have access to the embedded font and as such would count as distribution which of course is not covered?

Any help would be great before I start making headway on this project

thanks

Repro-Noel