Israeli Prime Minister Benjamin Netanyahu's challenger Benny Gantz is to receive state protection following online threats, the Shin Bet domestic security agency has announced.
"The prime minister has approved the Shin Bet's recommendation for close protection of Mr Gantz," a statement from the agency said late Tuesday.
The decision still requires ratification from a security committee.
In Israel, seven people automatically receive protection from the Shin Bet, including the leader of the opposition.
But Gantz does not officially have that title as the country has been stuck without a fully functioning government for more than a year, with three elections unable to produce a decisive result.
Since the most recent election on March 2, Gantz, who heads the centrist Blue and White party, has been trying to form a government.
To do so he has sought the backing of the predominantly Arab Joint List, prompting attacks on social media from Jewish rightwingers.
Former armed forces chief Gantz took to Twitter on Saturday to call on Netanyahu to "stop this incitement to violence, do not say that you did not know."