Thats assuming America is still world class in digital technology and does not have to be at the mercy of our enemies
If this is a covert demonstration of Russia's/Putin's capability then what is Russia/Putin holding in reserve?
Indeed, what are America's enemies holding in reserve?
I'm pretty sure this has been launched as a trial balloon by Russia/Putin as a means of testing the waters on Biden's resolve.
Further similar incidents in the near future will tell the story.
I think America has come close to playing all it's cards on the policy of doing covert damage to Russia.
Overt military action by the US isn't an option.