Delta Air Lines sued CrowdStrike on Friday, claiming the cybersecurity company had cut corners and caused a worldwide technology outage that led to thousands of canceled flight in July.
The Atlanta-based airline is asking for compensation and punitive damages from the outage, which started with a faulty update sent to several million Microsoft computers. Delta said the outage crippled its operations for several days, costing more than $500 million in lost revenue and extra expenses.
CrowdStrike did not immediately comment, but a lawyer representing the company pointed out this summer that other airlines had recovered from the outage much more quickly, and said that Delta was being misleading about its response.
The U.S. Department of Transportation is investigating why Delta took longer to recover than other carriers. Transportation Secretary Pete Buttigieg said the department would look into complaints about Delta customer service during the outage, including long waits for help and reports that unaccompanied minors were stranded at airports.
In its lawsuit, Delta claims that the outage occurred because CrowdStrike failed to test the update before rolling it out worldwide.
