US National Intelligence Director James Clapper on Thursday warned that America must be ready for a “large, Armageddon-scale” cyber attack, in remarks made at an annual conference of members of the US intelligence community in Washington DC. “Cyber threats to US national and economic security are increasing in frequency, scale, sophistication and the severity of impact,” Clapper warned. “Although we must be prepared for a large, Armageddon-scale strike that would debilitate the entire US infrastructure, it’s not our belief that that’s the most likely scenario.” […] In a sign of the rising concern over the trend of cyber warfare in...