I am sure this is not very helpful for you, but I got the same today with my 0.75BTC (my entire wallet)
Exactly the same, but from electrumsky.com
Hard lession!
We could go for a beer... just not to feel too idiot

Best

A

Same sad story here.
be careful!!
I am not expert, I got the same security update message and after few minutes my coins were gone.
The amount of the transaction and the address changed. 

The download site was electrumsky.com

Don't waste your time saying I am an idiot. I just want to help other people to avoid this phishing and to spread the alarm.
After 7 months this malware is still around stealing money!

As far as you know, is it enough to delete the app to be safe? (no need for a wallet anymore:( )

A.