 Hospital systems, they're seeing interruptions too. Memorial Sloan Kettering Cancer Center here in New York says most of their systems and procedures are reinstated now. But just earlier today, it reported pausing the start of some procedures that required anesthesia. Fox Business' Lydia Hu. The cause of all this mess is cybersecurity firm CrowdStrike. The company says the problem happened when it issued a faulty update to customers running Microsoft.