When investigating a cyber-attack, just because you have figured out the what, when and how, does not mean you have figured out the who.
No doubt that after Election Day 2020, someone somewhere will allege that some form of cyber-attack compromised the results. Though it may be tempting to round up the usual suspects, don’t take the bait. While countries like Russia, China and North Korea certainly lack clean hands, they are not necessarily the perpetrators of every cyber-attack targeting a U.S. organization or government entity.
via Attribution on Election Cyber-Attacks: Don’t Rush to Judgment.