Hello, I'll start with the fact that half a year ago I downloaded the electrum wallet and used it successfully until today, today I decided to go to my wallet to check my balance, then I went out and came in 10 minutes, my transaction was already gone and there were 2 confirmations, I'll tell you right away that I downloaded everything only from official sites, the version of my wallet was up to 3.3.4. The password was 40 characters and I didn't give it to anyone but me, nobody knew it in my head! And if it matters I used linux ubuntu. Eventually, all my accumulated money was stolen, is that how it will stay?
Hmm, version 3.3.4 should be safe from phishing scam but having a very long passphrase doesn't guarantee your fund's safety especially if your SEED was already leaked before that incident.
It's very hard to tell what happened but to give you somewhere to start, verify the signatures of your current Electrum or/and the previous version(s) if you've updated it.
By the way, the transaction already had 2 confirmations, so there's no way to reverse it.
In Russian:
Hmm, Bepcия 3.3.4 дoлжнa быть зaщищeнa oт фишингoвoгo мoшeнничecтвa, нo нaличиe oчeнь длиннoй ключeвoй фpaзы нe гapaнтиpyeт бeзoпacнocть вaшeгo фoндa, ocoбeннo ecли вaш SEED yжe был yтeчён дo этoгo инцидeнтa.
Oчeнь тpyднo cкaзaть, чтo пpoизoшлo, кpoмe кaк дaть вaм мecтo для нaчaлa, пpoвepить пoдпиcь вaшeгo тeкyщeгo Electrum и/или/и пpeдыдyщeй вepcии (вepcий), ecли вы oбнoвили eгo.
Кcтaти, тpaнзaкция yжe имeлa 2 пoдтвepждeния, тaк чтo ee нeвoзмoжнo пepeвepнyть.
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