WTF its happening now.
Today i put 2 factor to any of my accounts just for that. Right now all related with Bitcoin its getting troubles with the security.
Of course i still thinking use Windows its a serious mistake, but Linux not is the best option, its really easy find many security holes on many Linuxes and more if it have java of any kind. And Chrome its a massive holes browser and the people still using it.
I don't doubt the OP its good IT but all looks like have any hole in your system