An Obama official confirms on the record that as of January 2017 the intelligence community assessed that seven states were compromised.
https://www.nbcnews.com/politics/elections/u-s-intel-russia-compromised-seven-states-prior-2016-election-n850296
* seven states were compromised * had been targeted * in an exclusive interview with NBC News * classified threat briefing * Illinois itself had detected a "malicious cyberattack"