A manufacturer in Ukraine? I wonder which hackers from which country would have incentives to do that in 2014.
Jokes aside, I think that cyber warfare is the worst case scenario in terms of military efficiency, as it causes collateral civilian damage across the globe and its effects cannot be contained inside any borders.
And Toyota is a prime example of that. They ain't got nothing to do with the war, and were affected by it a bunch of times already.
Again it does sound like a modus operandi of a particular country... so many coincidences