1. Electrum was not "hacked"
2. Electrum did not claim they were "hacked"
3. Having a password set, rendered the possibility for someone to view your seed/private keys/sensitive data via RPC impossible. So, as you say:
This is indeed an unfortunate loss of bitcoin, but I would be fairly confident that the fault does not lie with Electrum. The earliest transaction into your wallet was on 19/12/2017. The vast majority of the balance was deposited on 01/01 and 02/01, the day they were "stolen".
Can you be 100% sure that you downloaded the "official" Electrum from: https://electrum.org/#download
and did you check the digital signature of the installer? If not, do you still have the original installer that you used?
2. Electrum did not claim they were "hacked"
3. Having a password set, rendered the possibility for someone to view your seed/private keys/sensitive data via RPC impossible. So, as you say:
I did not have 2FA enabled but I did have a very long password that had to be entered before funds could be transferred. I also have Norton AV installed and no viruses have been found.
The fact that you had a password set excludes the possibility that you lost the coins due to the recently highlighted security flaw that was identified in the Electrum RPC setup.This is indeed an unfortunate loss of bitcoin, but I would be fairly confident that the fault does not lie with Electrum. The earliest transaction into your wallet was on 19/12/2017. The vast majority of the balance was deposited on 01/01 and 02/01, the day they were "stolen".
Can you be 100% sure that you downloaded the "official" Electrum from: https://electrum.org/#download
and did you check the digital signature of the installer? If not, do you still have the original installer that you used?