A-PDF Password Security

I have been researching on the internet on securing PDF documents with encryption, copy/print protection and time based expiry.  I came across A-PDF password security which is intuitive and feature rich for a decent price.  A-PDF is quite effective and responsive. 

I recommend this app for users who are looking for a quick and easy app for protecting valuable research / business content from being copied and distributed unreservedly.

They also provide a free license for people who promote this app.  Enjoy this benefit and let me know if this is useful.