Translate in french the 5 last news (REXML & SSL).

Hi, 

Here is a translation for the 5 last news.

I've some difficulties to translate ``insecure``` in french but I uses ```vulnérable```.

Best regards.
I am not convinced here. Maybe something like `…changement, vous risquez de ne plus pouvoir garantir la sécurité de vos communications réseaux.`.