On Sunday, CrowdStrike refuted Delta Air Lines’ assertion that it should be held responsible for the flight disruptions caused by a global outage on July 19 that was brought on by a faulty update. CrowdStrike maintained that its potential liability was minimal.

Delta CEO Ed Bastian stated last week that the outage had cost the US airline $500 million and that it intended to pursue legal action to obtain compensation from the cybersecurity company.

CrowdStrike reiterated its apology to the airline operator. However, in a letter from an external lawyer, it expressed strong disappointment in Delta’s suggestion of inappropriate conduct. CrowdStrike firmly rejects any allegations of gross negligence or misconduct.

Delta experienced significant disruptions, resulting in the cancellation of over 6,000 flights within a six-day period, affecting more than 500,000 passengers. Consequently, the US Transportation Department has initiated an investigation to determine the reasons behind Delta’s prolonged recovery time compared to other airlines.

The CrowdStrike letter said that "any liability by CrowdStrike is contractually capped at an amount in the single-digit millions."

Delta chose not to comment on the CrowdStrike letter.

Shortly after the outage incident, CrowdStrike contacted Delta to provide assistance.

“Additionally, CrowdStrike’s CEO personally reached out to Delta’s CEO to offer onsite assistance, but received no response,” the letter said.

Bastian shared with CNBC last week that CrowdStrike had generously offered pro bono consulting services to assist us.

Delta Air Lines recently informed U.S. lawmakers that CrowdStrike’s erroneous update significantly affected their computer systems. The impact was substantial, affecting more than half of Delta’s computers, including numerous workstations at every airport within their network.

The letter from CrowdStrike indicated that Delta’s intricate IT system, which manages and synchronizes all of our data, including that used by our crew tracking and gating software, necessitated manual recovery.

Additionally, the CrowdStrike letter stated that if Delta pursues legal action, it will be required to explain why its competitors, who faced similar challenges, were able to restore operations significantly more quickly and why Delta declined on-site assistance from CrowdStrike professionals who successfully assisted numerous other clients in restoring operations much more expeditiously.

A CrowdStrike representative stated that “Public posturing about potentially initiating a frivolous lawsuit against CrowdStrike, a long-standing partner, is not beneficial to any party. We trust that Delta will agree to collaborate in order to find a resolution.”