Speaking to ITV Daybreak, Martin Sutherland, Managing Director at Detica, a data managing company, said the potential threat to society by cyber attacks is enormous.
He added that the frequency of those attacks is increasing all the time.
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One of the attackers who murdered a priest in a French church during morning mass in Normandy has been named by prosecutors.
Father Jacques Hamel has been described as man who dedicated his life to his parishioners and still regularly led mass, even at 86.
Rain will spread southeastwards through N. Ireland, Wales and England overnight.