Secuirity in FMS

Hello friends,

I have read that streaming through FMS increase secuirity of the file.It is said that files streaming via rtmp cannot be downloaded.Pls find this link

this is the link to a software called replay catcher, which is used to download the rtmp protocol based files.
I am bit confused wih it. Is there any way to secuirity using FMS? Why beco’z my company is thinking to use FMS instead of the progressive download beco’z of the secuirity.

Pls help me to find me the correct solution.