 I'm Cammie McCormick. A massive global IT outage has affected everything from hospitals to air travel. It happened when a company called CrowdStrike issued a security update that affected Microsoft Access. CrowdStrike CEO George Kurtz on CNBC. We've fixed the issue so the systems are coming up and running. Some systems may not fully recover and we're working individually with each and every customer to make sure that we can get them up and running and operational.