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Microsoft estimates that CrowdStrike incident affects 8.5 million Windows devices worldwide

2024-07-21

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The U.S. Cybersecurity and Infrastructure Security Agency slammed CrowdStrike in a LinkedIn post on Saturday for making a "serious mistake" by pushing out a flawed update that brought down the systems of numerous businesses and governments around the world.

Earlier, Microsoft's official blog released a statement titled "Helping customers get through the CrowdStrike outage period." Microsoft said that although software updates may occasionally cause disruptions, major incidents like CrowdStrike do not occur often. The company currently estimates that CrowdStrike's update affected 8.5 million Windows devices, accounting for less than 1% of all Windows devices.

"Although the percentage is small, the broad economic and social impact reflects the many critical services that organizations are using CrowdStrike to support. This incident reminds us of the importance of leveraging existing mechanisms to prioritize security deployment and recovery across the technology ecosystem."

CrowdStrike also released a new statement on the global IT failure, saying that it has understood how the problem occurred and is conducting a thorough root cause analysis to determine how the logical defect occurred. "We are committed to finding any foundation or workflow that can be improved to enhance our operating procedures." CrowdStrike said that as the investigation continues, it will report the results of the root cause analysis. Currently unaffected systems will continue to operate normally and there is no risk of encountering such incidents in the future. CrowdStrike CEO George Kurtz also posted on social media X that the company has written a technical overview of the relevant incidents and continues to work with customers and partners to resolve the problem.

CrowStrike is a leading cybersecurity company in the United States. It has 271 of the world's top 500 companies as its customers, including Microsoft, Amazon, AWS, etc. Many government agencies (such as the top cybersecurity agency and the Infrastructure Security Agency in the United States) use its software. Insurance broker Marsh McLennan said that more than 75 customers may file claims for network failures due to its global collapse event.

According to information from Flight Aware, a flight tracking website, as of noon Eastern Time on the same day, more than 2,000 flights within, into or out of the United States had been canceled, and more than 5,300 flights were delayed. Several airlines, including United Airlines, said that flights were gradually returning to normal, but as of noon on the 19th, a considerable number of flights were still delayed or canceled.

In addition, UPS and FedEx said that although their airlines are operating normally, express delivery may still be delayed due to computer system failures. Among them, Delta Air Lines said that it had canceled 1,200 flights on Friday and there may be more flight delays and cancellations over the weekend.

Companies including Tesla, Starbucks, and ExxonMobil have also publicly stated that they have been affected. Starbucks said that widespread failures in third-party systems have temporarily interrupted mobile reservation and payment functions, and it is dealing with related issues. ExxonMobil said that global network failures have affected some of the company's information systems.

The outage caused CrowdStrike's stock price to plummet. On July 19, Ark Investment Management, owned by "Wood Sister" Cathie Wood, chose to buy the dip.

Exchange documents show that on July 19, local time, after the outage occurred, two ETFs under Ark Investment Management purchased 38,595 shares of CrowdStrike, worth approximately US$13.24 million; increased holdings of software development platform GitLab by 38,519 shares, worth slightly more than US$2 million; sold 16,758 shares of Coinbase and 88,545 shares of Roblox, and reduced holdings of 17,607 shares of Tesla.