What caused it and what’s next

A botched software update from cybersecurity vendor CrowdStrike triggered what could be the largest IT outage in history, impacting millions of Windows systems worldwide. The outage is estimated to cost U.S. Fortune 500 companies $5.4 billion. The error occurred on July 19, 2024, caused by a flaw in the Falcon sensor update on CrowdStrike’s Falcon platform, causing Windows systems to crash.