“The senator’s comments come in the wake of Special Counsel Robert Mueller’s report that revealed that the Russian military intelligence unit known as the GRU sent malicious viruses to the Florida county government officials who were overseeing the 2016 election.”

https://www.foxnews.com/politics/marco-rubio-says-hackers-infiltrated-florida-county-elections-system-were-in-a-position-to-alter-voter-roll-data