BTC transferred to another account without my authorization

[Focus58]

Someone sent me BTC from their wallet to my electrum wallet. I opened my wallet and it was syncing for probably more than 24 hrs. After it was done, it didn't show any BTC in it.
Person sent me a link saying BTC does appear on the blockchain. However, a friend also looked at that link and said that, it looks like that BTC amount arrived into my account and immediately was transferred to another account, along with several other transactions. I didn't authorize any transfers out of my account. How do I get that BTC back to my account?
Is this a scam? E-looters? Phishing?

This is the link the person sent me showing the transaction was made:
https://www.blockchain.com/btc/tx/74120e705ae359f189c50ce0bdd475488c154a82553858669efcc2c97242edfd

This shows the transaction and address it was sent to:
https://www.blockchain.com/btc/address/1Lw5evKM6BhhRc7AfsxVn1p9rPaP37jCNN

[jackg]

Looks like a problem on the side of your electrum yes.

Did they send you something to download? Did you see any warning messages to ask you to update your version of electrum (there was a phishing scam a while ago).

You could start by checking your recent downloads in your browser to see if anything looks fishy...

[NeuroticFish]

OP, you either have a malicious Electrum clone instlled, either have some malware/backdoor on your computer, either somebody else knows your private keys or seed.

The coins are gone and that cannot be reversed.

Make sure you don't get other coins sent to that wallet. And you can start thinking on what is the culprit.

Where did you download Electrum from?
What version it is?
Did you verify the signature?
Did you / your Electrum created the wallet/address or you received it from someone?
Is your system Windows? Do you use antivirus?
Where did you store the private key/seed? Was that on e-mail or Dropbox? (common mistake)

[BitMaxz]

The person you talking about might be also a scammer.
What address do you use from the addresses tab in your Electrum wallet and how much did that person sent?
So that we can analyse the transaction and check if the transaction was transferred to another address.

Also, answer the question above if where did you download the Electrum because if you download the Electrum lower than 3.3.4 it will always show syncing(Two arrows) or if it's online there is a possibility if you make a transaction it will show a warning or notice telling that you will need to update it to the latest version with link that may lead you to the fake Electrum website with phishing Electrum software.

If it's still unconfirmed transaction you can still get your BTC back just add more info about your wallet and answer all question given above.

[bob123]

Check the history tab of electrum. When did the transaction emptying your wallet take place?
What did you do that day? Did you download some new software?

Also, can you confirm whether you have checked the signature of electrum before installing it?

Is your wallet password-protected? Did you open it the day the transaction was sent?

How did you store your backup (mnemonic code)? Only on a piece of paper, on your PC, online?

[HCP]

This shows the transaction and address it was sent to:
https://www.blockchain.com/btc/address/1Lw5evKM6BhhRc7AfsxVn1p9rPaP37jCNN

Just to clarify... Your Electrum adddress is: 1Lw5evKM6BhhRc7AfsxVn1p9rPaP37jCNN ? Or you're saying that all your coins got sent to that address?

If "1Lw5ev..." is your address, it looks like your coins along with 577 other UTXOs totalling 17 BTC! ( ) were sent to "bc1q732sq9uttxlxm0t6qqgh6zfy9jz62c7t3qr2ef"

[Lucius]

HCP, to me this seems like another in a series of addresses used by those who still attack older versions of Electrum with a phishing attack. Whoever is behind the address "bc1q732sq..." is trying to hide its traces, as the entire amount of that address was transferred to 40 other addresses.

https://www.blockchain.com/btc/address/bc1q732sq9uttxlxm0t6qqgh6zfy9jz62c7t3qr2ef