2024 CrowdStrike-related IT outages

On 19 July 2024, the American cybersecurity company CrowdStrike distributed a faulty update to its Falcon Sensor security software that caused widespread problems with Microsoft Windows computers running the software. As a result, roughly 8.5 million systems crashed and were unable to properly restart in what has been called the largest outage in the history of information technology and "historic in scale".

Source: Wikipedia — 2024 CrowdStrike-related IT outages (CC BY-SA 4.0)