PHOENIX - After a security breach over the summer, Arizona Secretary of State Michele Reagan assured voters that their information was safe, but how safe is it really?

It appears Russian hackers tried to access voter information in Arizona and Illinois over the summer.

The FBI sent bulletins to elections officials across the country, warning of similar cyberattacks.

According to Reagan, the door was opened when the username and password of a county elections employee were posted online. The employee had access to a voter database.

“It appeared as if somebody tried to hack into a computer through one of the county computers,” Reagan said.

Reagan said the hackers did not get into the information.

There’s always some kind of background, just random programs just trying to go out there and do whatever they can,” ASU cybersecurity expert Adam Doupe said. “And then there’s, you know, people who don’t really know what they’re doing but have enough security knowledge to be dangerous that go out there and try things.

“And then you have your advanced threats that will be very patient and will wait months to try to get information.”

Names, addresses and other personal information were among the files the hackers tried to reach.

The state voter database was taken offline for 10 days and inspected by state officials and the FBI, according to Reagan.

It was determined that election results were not affected.

“Just even the information that’s in there, you could really use that maliciously to really affect people,” Doupe said.

Reagan said a second layer of cybersecurity will be added to protect personal information.

WATCH: Russian hackers tried to break into AZ voter database