The Microsoft (MSFT) 澳洲幸运5官方开奖结果体彩网:outage that stemmed from an update to 澳洲幸运5官方开奖结果体彩网:CrowdStrike's (CRWD) security software and 澳洲幸运5官方开奖结果体彩网:ground thousands of flights cost Delta Air Lines (DAL) at least $500 million over the course of five days, CEO Ed Bastian told CNBC Wednesday.

Bastian said the impact wasn't just lost revenue from having to refund tickets for canceled flights but "tens of millions of dollar per day" spent on hotel accommodations and other compensation for its affected customers. He said the company has "no choice" but to seek damages.

Delta Was Hardest Hit Major U.S. Airline

CrowdStrike stock sank Tuesday on 澳洲幸运5官方开奖结果体彩网:the report that Delta has hired a high-profile attorney to pursue compensation for its losses. Bastian told CNBC that CrowdStrike has offered free consultation services to help the airline recover from the outage, but nothing꧑ beyond that.

Delta 澳洲幸运5官方开奖结果体彩网:was the hardest hit of the major U.S. airlines because of their reliance on Microsoft software for a system that sಞchedules their flight crews, making Delta's thousands of cancel🥀ed flights difficult to reschedule because of the uncertainty that a full crew would be able to be arranged.

"If you're going to be having priority access to the Delta ecosystem in terms of technology you've got to test this stuff," Bastian said. "You can't come into a mission critical, 24/7 operation and tell us we have a bug. It doesn't work."

DOT Probing Delta's Response to Outage

The Department of Transportation is 澳洲幸运5官方开奖结果体彩网:also probing Delta's response to the outage to investigate whether the airline adequately protected its customers during the outage crisis. Southwest Airlines (LUV) faced a $140 million civil penalty over its handling of a 澳洲幸运5官方开奖结果体彩网:2022 winter storm that caused nearly 17,000 flights to be canceled after the DOT determined Southwest didn'ꦫt follow consumer protection laws.

Delta won't be alone in pursuing damages from CrowdStrike, as the first class action suit against the tech company was filed Tuesday. The Plymouth County Retirement Association filed suit on behalf of CrowdStrike shareholders, who the association claims were harmed by CrowdStrike's claims that its software was tested and secure, when in reality a small error could lead to a substantial outage that could affect that company's stock price.