now the Fallout from Friday's Global it outage is still very much going on here in the US Delta Airlines has cancelled more than 600 flights that were due to takeoff on Monday the airline seems to be worse affected than Rivals by a faulty update from cyber security firm crowd strike for its part the cyber security firm says a significant number of the 8.5 million devices impacted are now back online but elsewhere Banks hospitals and small businesses are those still trying to recover many small businesses are affected and some of the consequences remain to be seen so let's explore that now with Charlie mlan Bristol he's the founder and director of Plan B Consulting a firm that specializes in cyber resilience Charlie take us to the big picture here what are we seeing in terms of impact at the start of this week I think I think there's a mixed impact on and different organizations there are you know the things about computer system are very complex so certain organizations find this quite easy to sort out other organizations will take much longer sometimes it will affect people in different ways so we're getting some stories from um data Barracks um uh our partner there who are finding that their their clients are having difficulty getting some of their systems rebooting and think of the poor guy who has a pile of 300 computers of which he needs to which it takes 10 minutes for each computer to get the patch on and reboot so they're sitting there with a he's sitting there with a huge pile of computers trying to get his organization back online I think what is what happens is you know often these these computer issues disappear off the front pages because well you got Delta the the comp passengers still affected but I don't think you should underestimate the huge amount of work behind the scenes by technical people by customer service people by Communications people who are trying to deal with this and we maybe not see this in the news because we move on to the next event but there's a huge amount of management time and effort people working s 24/7 to get this sorted so with all these incidents they go on for a little while quickly go for the news but then there is a very long tale of them which people are busy sorting problems for for days there now Charlie briefly what is the impact here for businesses and what's the lesson to be learned when we talk about the interconnectedness here and some of the vulnerabilities that might be intertwined well I I I think you know we we live in a a close coupled world we build systems we build systems upon systems we build systems a legacy systems we outsourc the best of the breed and you know this incident was caused by an out Source company so we build these very elaborate system and there's no one mind who can understand the complexi at all and keeps an eyon to make sure all the P all the bits work together there was an incident which has similar consequences in the airline industry for gats are air traffic people and one line of code was enough to crash their system and then they spent 24 hours you know with Airlines it takes a long time to sort out an incident so with these complex systems the chances get higher and higher of an instant happening and we can do our risk assessment we can look at all the different issues M Bristol sorry to interrupt you there we're going to have to leave it for time but thank you so much for sharing your perspective all right no problem