Interesting wetware hack
Think of it like building a SQL table relationship in the brains of people not IT literate.
HACKS = RUSSIA = JOHNSON = DODGY
I mean, Johnson and dodgy Russian money is a racing certainty. Those oligarchs would have to pay tax under a Corbyn govt. and they hate that idea. Tax is for the little people. Democracy 'Hacks' and Russia is a well-proven thing. So, it's just linking all these up in people's minds into a cloud of hazy emotional notions. Kind of like the daft corbyn is terry wrist. But in reverse.
Even if it wasn't a sophisticated hack, it's been on the front page of the Beeb all morning.
So, it is indeed a sophisticated hack, of the news if not of a computer system.