Any more info? Were you using a VPN? Any experts out there care to chime in, would using a VPN have stoped something like this?
I suggest anyone out there reading should turn 2FA for their gmail accounts, or even better U2F which gmail allows.
NO! it would not help. . .
dont connect to the internet with a computer that has Private keys on it!!! you can lose it simply by connecting to malicious site that offers ICO or something
any file you download can be malicious