Quote from: Myrnyi on Today at 11:59:49 AM

I encrypted my file a few years ago on my linux debian computer, I do not use this comp now. I have only this encrypted file in my phone and in two usb sticks that are in a metal safe, and I have learnt my seed by heart. Everything else is paranoia...

When exactly did you create your wallet?

Based on your Electrum wallet the Bitcoin went to your wallet and sent right away after it confirms there is a 15 minutes gap before it's sent to another wallet which I think I believe someone already has control of your wallet. They created a script to automate sending BTC if the wallet receives any amount of BTC. That script was spreading before I think last 2019.

So when was the first time you created your wallet?
If your wallet was created before 2019 and installed Electrum lower than 3.4.4 before then maybe you accidentally updated it with the fake version of Electrum and you can't just remember because it was long ago and now you send BTC from Coinbase to Electrum and you think that you didn't receive the BTC that Coinbase sent you. So you decided to reinstall the wallet and use the latest one?

Actually, a PC/laptop that is always connected online has always vulnerable to any attacks without any protection your Pc/Laptop can be infected with malware and viruses.
Also, don't use the free antivirus from Microsoft they actually useless if your pc doesn't have any security protection then your wallet is already compromised.

Would you mind trying the NeuroticFish suggestion, scan your PC and let us know if it detects anything? Use Malwarebytes and Kaspersky you can use the trial to fully scan your PC.