It'd be pretty hard for the Russians to hack America using the computers in Fallout 4. For one, the computers in Fallout 4 are not connected to the internet: in Bethesda's alternative history, America never makes it that far into the future. Another obstacle stopping Russia from hacking America via the computers in Fallout 4 is that, no matter how you approach it, it'd simply be impossible.
That hasn't stopped CNN using footage of a Fallout 4 computer in a story about Russian hacking, though. It's not a huge faux pas on the news outlet's part: it's simply used as B-Roll footage, after all. But it's still pretty amusing, especially in light of how often TV news co-opts video game footage. A recent example includes ITV passing Arma 2 footage off as real.