The World Economic Forum on Africa kicks off in Abuja on Wednesday in the shadow of security fears and mounting global concern about the plight of more than 200 schoolgirls abducted by Islamist militants.

Nigeria hosts the World Economic Forum on Africa summit this week under tight security after two deadly car bomb attacks raised fears about a possible spread of Islamist militant violence.

Hackers attacked Israeli computers including one used by the defence ministry department dealing with civilians in the occupied West Bank, an Israeli data protection expert said.