 It's 10.06 GMT. You're listening to The Newsroom on the BBC World Service with me, Valerie Sanderson. So, the world is still recovering after an IT outage which affected many hospitals, banks and airports. It was all due to a faulty software update from the cyber security firm CrowdStrike. Computer systems are now coming back online and businesses are scrambling to get back on track after many had to roll back the years and resort to pen and paper.