The largest company in the world is blocking outside access to its communication systems as it continues to struggle to get systems back online following a suspected cyber attack earlier this month.On 15 August, Saudi Aramco said it had isolated all its electronic systems from outside access “as an early precautionary measure that was taken following a sudden disruption that affected some of the sectors of its electronic network”.“The disruption was suspected to be the result of a virus that had infected personal workstations without affecting the primary components of the network,” Saudi Aramco said over Facebook.It claimed the interruption...