A faulty software update by CrowdStrike led to global disruptions affecting various sectors like transportation, healthcare, and banking. The incident, not a cyberattack, caused major issues for businesses and services worldwide, highlighting the risks of over-reliance on a single system or provider. The outage impacted essential services like flights, hospitals, and emergency services, with thousands of flights canceled and delayed globally. The scale of the disruption, possibly the largest IT outage in history, underlines the fragility of the interconnected technology ecosystem, prompting concerns about cybersecurity and system resilience.