Re: Fraudulent transaction along with the correct one(Ledger Nano S + Electrum)
That is indeed a puzzle... I've honestly never seen anything like this. I would hazard a guess that it was a bug... as the UTXO generated is still unspent and given the current price of BTC, I would expect it would have been moved/sold by now if it was 'stolen'.
Quite how you can "accidentally" sign a second transaction is a complete mystery and it seems it would be incredibly difficult to replicate the issue. I've certainly not experienced anything similar.
If Ledger support are unable to assist, I doubt anyone here will be.
Have you tried raising an issue on the Electrum github? https://github.com/spesmilo/electrum/issues 
Quite how you can "accidentally" sign a second transaction is a complete mystery and it seems it would be incredibly difficult to replicate the issue. I've certainly not experienced anything similar.
If Ledger support are unable to assist, I doubt anyone here will be.
Have you tried raising an issue on the Electrum github? https://github.com/spesmilo/electrum/issues Yes, I'm banging my head against the wall for two weeks now and can't still figure what happened (bug or exploit ?) or at least how ...
Didn't raise an issue in the github, will do.
Thanks for your reply