It doesn't seem like the funds have moved anywhere else either. How about your seed? do you have it physically stored somewhere safe? or is it on some online cloud storage)? If the latter, then that could be an issue.
The seed is saved on a text file, on a linux virtual machine which runs on a server which is at my home. I'm the only one who has access to that server. I do have notifications when someone tries to connect via SSH to the server no matter from where. I'm using that server for years and never something like his happened. This is really really weird.