Well, it seems to me that Russia failed to alter votes in these 21 states, so it appears that the previous administration DID do something to stop it.

Hacking DNC e-mails (if you look up the websites of the GOP and the Democrats, they are ".org" websites, not ".gov"), and the spreading of false stories on the internet, aren't things specifically targeted at the US Government.  Therefore, there isn't much they can do to stop such things.  I'd even say that it isn't government's job to do so (at least those of us that favor small government think so).

Now, let's look at other things....

1) Who issued sanctions on Russia following the election?  Obama.
2) Who had certain Russians expelled, and seized their compounds?  Obama.
3) Who is looking at lifting or lightening sanctions?  Trump.
4) Who is looking at giving back the Russians their compounds?  Trump.
5) Who wanted the anti-Russia plank of the RNC Platform taken out prior to the GOP convention?  Trump.

Thanks for stopping by.