I made a "n00b" mistake. I installed Electrum on my main computer. I then installed Electrum also on my second computer. I choose the view-only version but made the mistake of typing in the seed instead of the master public key.
Obviously it was a stupid mistake, but do I in any way risk that other stole my seed?
(No one else uses that computer, so question is rather if that public key, which is the actually the seed of my main wallet, gets sent online somehow for others to see?)
the master public key is not sent to the servers, so there's no danger that it was sent online.
however, the master public key is written unencrypted on your hard drive.
for that reason, I would rather consider this seed as potentially compromised, and move your coins to a new wallet
