What can be done? Russia never signed the Budapest convention against cyber attacks and turns a blind eye against rogues operating within it's borders just as another tactic to peck at America's weakening state and expose how vulnerable it is to propaganda and attacks on its infrastructure and companies.

I think Biden is either playing a front by playing coy by telling the media he's ignorant of the attackers. If he showed strength, this could be a good move against the perfidious ruskie.