Delta Air Lines is suing the cybersecurity firm that has been blamed for causing a global technology outage this summer.

Delta Air Lines on Friday sued CrowdStrike in a Georgia state court after a global outage in July caused mass flight cancellations, disrupted travel plans of 1.3 million customers and cost the carrier more than $500 million.

While Delta did not specify an amount that it is seeking from the company, court documents show the airline lost $500 million from flight cancelations, delays

Delta Air Lines has filed a lawsuit against cybersecurity firm CrowdStrike following a July outage that resulted in over 7,000 flight cancellations and significant financial losses. The airline accuses CrowdStrike of deploying faulty software that led to system crashes and demands compensation for damages and reputational harm.

The global outage in July disrupted travel plans of 1.3 million customers and cost the carrier more than US$500 million. Read more at straitstimes.com.

Delta Airlines is taking civil action against Crowdstrike for the July IT outage that grounded flights and left thousands stranded. The outage was “catastrophic” for Delta, the airline said in the complaint.