The Federal Bureau of Investigation has found breaches in Illinois and Arizona's voter registration databases and is urging states to increase computer security ahead of the November presidential election, according to a U.S. official familiar with the probe.
The official, speaking on condition of anonymity, said on Monday that investigators were also seeking evidence of whether other states may have been targeted.
The FBI warning in an Aug. 18 flash alert from the agency's Cyber Division did not identify the intruders or the two states targeted.