So. Here is the key paragraph relevant to election security:
Jason Maher, Tipton’s gaming buddy, told them about Tipton’s interest in rootkits: malicious software that can be installed via flash drive in order to take control of a computer while masking its existence until it deletes itself later. Sand theorized that Tipton went into the draw room six weeks before the big jackpot and, despite the presence of two colleagues, managed to insert a thumb drive into one of the two computers that select the winning numbers. That thumb drive contained the rootkit; the rootkit allowed Tipton to direct which numbers would win the Hot Lotto on Dec. 29, 2010.
Let's try to imagine which is better secured: a lotto computer dealing with tens of millions of dollars, or a voting tabulation machine in any one of the states whose voting methods leave no trace?