Of course it is electrum faullt, because software has holes. I opened original programm not fake and it adviced me to down load upgrade, my fault is only that i have not learnt all these information before.
A message from the electrum server you were connected to told you to update the software.
If you would have checked the link, you would have realized that it lead you to a fake website (or to github without any source code).
This, combined with the fact that you didn't verify the signature, lead to your funds being stolen by malware.
But how do i know if i open ORIGINAL SOFTWARE!?
As already mentioned, verify the signature before installing (as stated on the website).
Again, the software was installed very far before and would never use in future, the money was safe untill i open that programm
1) It was never very secured if you stored it on an online computer AND your mobile phone.
2) They got stolen once you downloaded and installed malware, electrum is not at fault.