Authorities in the United States are beefing up cyber defences against potential electronic attacks on voting systems ahead of the US elections on 8 November.
Threat of computer hacking have increased amid fears that Russia or other actors could spread political misinformation online or perhaps even tamper with voting.
To counter the cyber threat, majority of the states have accepted help from the US Department of Homeland Security (DHS) to probe and scan voter registration and election systems for vulnerabilities.
Ohio has asked a cyber protection unit of the National Guard, a reserve force within the US military, for assistance to protect the state's systems.
However, cyber security experts and US officials say chances that a hack could alter election outcomes are remote, in part because voting machines are typically not connected to the internet.
(With inputs from Reuters)
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