BOOM! EVERYTHING IS GONE!!
:-(
Sad to see that another mate has fallen to the hands of phishing attacks. This is so common that it makes me want to cry too. From now on, never act on upgrades especially when it comes from softwares you downloaded of the internet. The electrum wallet like any other wallets should always be downloaded from their official sites, if in doubt better ask first before it is too late - unfortunately, like in your case
People should really mind even on the most basic things to avoid these kind of situation or circumstances.I didnt really expect that there are still people who got victimized
on this classic phishing attempt via Electrum updates yet this had been known already in the past. Damn, 3.5 bitcoin isnt something an amount that can easily be ignored.
@OP, sorry for your loss but no one could able to help you out since tx's are irreversible and theres nothing we can do about.