The outage, which struck July 19 last year, was the result of a faulty update to CrowdStrike’s Falcon Sensor software running on Microsoft Windows systems. Distributed as part of a routine content push, the update led to widespread blue-screen errors and boot failures that affected critical infrastructure, airlines, banks and hospitals.

The July outage caused by the bug in the company’s Falcon software delayed thousands of flights, broke back-end systems and rendered laptops temporarily unusable.