Did you just searched through google the word electrum and didn't go directly to the official Electrum website?
This is not the case here.
According to what stated by OP, he/she got a message regarding updating Electrum and fell for the scam.
Old versions of Electrum let the servers to display a message when users broadcast a transaction. This feature can be easily abused. Servers can ask the users to install a fake version of Electrum instead of a real update.
A link to more details about this phishing attack posted above by o_e_l_e_o.