3 years of war in Ukraine. What do cyber attacks teach us?

Russian attacks on Ukrainian IT systems did not begin on 24 February 2022. Jon DiMaggio in his book "The Art of Digital War" described **Kreml's operation during the 2014 Ukrainian presidential election.** Then the Crimean peninsula was to be cut off from the net for 2 days as a consequence of DDoS attacks, which besides affected NATO websites.**