Generally it's an old trick, I don't know if there are any new update.
Tend to agree and that old trick was having similar to what happened last year, millions worth of Bitcoin has been successfully stolen by the hackers using that technique. It's a malicious link that usually commonly pops up on your screen on your wallet saying that the user needs to update their Electrum wallet app, but the link hasn't come from the official site of Electrum.org but it looks like Electrum official which have a malicious link upon clicking.
IIRC, since Electrum is an open-source wallet and any dev or users can run their own Electrum server and that's what they called, ElectrumX and everyone can set up using this gateway server which easily for them to insert a malicious link. There are too many possible loopholes in electrum wallet and this might be hackers can be used. Just follow what o_e_l_e_o said above, verifying is the most important before you will download.
Good thing that you didn't get fooled.