The FBI has launched investigations into malicious cyberattacks on the electronic election infrastructures in Illinois and Arizona, and federal officials last month warned states to take steps to protect their systems as the presidential campaign heats up, according to reports that surfaced this week. The attacks, dating back to June, led to the illegal download of information on more than 200,000 Illinois voters, leading to a 10-day shutdown of the state's voter registration system. Hackers also penetrated systems in Arizona.