What is CrowdStrike, the company linked to the global outage?

The global computer outage affecting airports, banks, and other businesses appears to be partially caused by a software update from a major US cybersecurity firm. The firm identified a defect in a content update for its software on Microsoft Windows operating systems. The issue is specific to one of the firm’s main software products and does not affect Mac or Linux operating systems. The firm has taken action to address the problem, and customers were advised to reboot their computers. The cybersecurity company is known for its software sales, investigations of major hacks, and its role in tracking hacking groups.