The dispute between Delta Airlines and CrowdStrike is entering the hot phase: The airline sued the cybersecurity company CrowdStrike in Fulton County Superior Court in the US state of Georgia on October 25, according to media reports.

The airline has been threatening to sue since September, after the failure of CrowdStrike’s Falcon security tool on July 19 disrupted the travel plans of 1.3 million Delta customers on 7,000 flights and cost the airline more than $500 million, according to the airline.

Millions of people affected in various industries

In addition to the large number of flight cancellations worldwide, the software failure also affected banks, healthcare facilities, media companies and hotel chains around the globe.