[fjtorres]

Originally Posted by Nate the great

Here:
http://the-digital-reader.com/2015/0...ooks-dbw-2015/

The tech that Jellybooks is using to benignly track your reading habits can also be used as the first step towards maliciously hacking your mobile device.

This is not an attack on JellyBooks, but I do feel that as a matter of security it would be a good idea to avoid using Epub3 ebooks on any platform which supports running Javscript files inside the ebook.