How a faulty CrowdStrike update crashed computers around the world (2024)

Airlines, banks, hospitals and other risk-averse organizations around the world chose cybersecurity company CrowdStrike to protect their computer systems from hackers and data breaches.

But all it took was one faulty CrowdStrike software update to cause global disruptions Friday that grounded flights, knocked banks and media outlets offline, and disrupted hospitals, retailers and other services.

“This is a function of the very hom*ogenous technology that goes into the backbone of all of our IT infrastructure,” said Gregory Falco, an assistant professor of engineering at Cornell University. “What really causes this mess is that we rely on very few companies, and everybody uses the same folks, so everyone goes down at the same time.”

The trouble with the update issued by CrowdStrike and affecting computers running Microsoft’s Windows operating system was not a hacking incident or cyberattack, according to CrowdStrike, which apologized and said a fix was on the way.

But it wasn’t an easy fix. It required “boots on the ground” to remediate, said Gartner analyst Eric Grenier.

“The fix is working, it’s just a very manual process and there’s no magic key to unlock it,” Grenier said. “I think that is probably what companies are struggling with the most here.”

While not everyone is a client of CrowdStrike and its platform known as Falcon, it is one of the leading cybersecurity providers, particularly in transportation, healthcare, banking and other sectors that have a lot at stake in keeping their computer systems working.

“They’re usually risk-averse organizations that don’t want something that’s crazy innovative, but that can work and also cover their butts when something goes wrong. That’s what CrowdStrike is,” Falco said. “And they’re looking around at their colleagues in other sectors and saying, ‘Oh, you know, this company also uses that, so I’m gonna need them, too.’”

Worrying about the fragility of a globally connected technology ecosystem is nothing new. It’s what drove fears in the 1990s of a technical glitch that could cause chaos at the turn of the millennium.

“This is basically what we were all worried about with Y2K, except it’s actually happened this time,” wrote Australian cybersecurity consultant Troy Hunt on the social platform X.

Across the world Friday, affected computers were showing the “blue screen of death” — a sign that something went wrong with Microsoft’s Windows operating system.

But what’s different now is “that these companies are even more entrenched,” Falco said. “We like to think that we have a lot of players available. But at the end of the day, the biggest companies use all the same stuff.”

Founded in 2011 and publicly traded since 2019, CrowdStrike describes itself in its annual report to financial regulators as having “reinvented cybersecurity for the cloud era and transformed the way cybersecurity is delivered and experienced by customers.” It emphasizes its use of artificial intelligence in helping to keep pace with adversaries. It reported having 29,000 subscribing customers at the start of the year.

The Austin, Texas-based firm is one of the more visible cybersecurity companies in the world and spends heavily on marketing, including Super Bowl ads. At cybersecurity conferences, it’s known for large booths displaying massive action-figure statues representing different state-sponsored hacking groups that CrowdStrike technology promises to defend against.

CrowdStrike CEO George Kurtz is among the most highly compensated in the world, recording more than $230 million in total compensation in the last three years. Kurtz is also a driver for a CrowdStrike-sponsored car racing team.

After his initial statement about the problem was criticized for lack of contrition, Kurtz apologized in a later social media post Friday and on NBC’s “Today Show.”

“We understand the gravity of the situation and are deeply sorry for the inconvenience and disruption,” he said on X.

Richard Stiennon, a cybersecurity industry analyst, said this was a historic mistake by CrowdStrike.

“This is easily the worst faux pas, technical faux pas or glitch of any security software provider ever,” said Stiennon, who has tracked the cybersecurity industry for 24 years.

While the problem is an easy technical fix, he said, it’s impact could be long-lasting for some organizations because of the hands-on work needed to fix each affected computer. “It’s really, really difficult to touch millions of machines. And people are on vacation right now, so, you know, the CEO will be coming back from his trip to the Bahamas in a couple of weeks and he won’t be able to use his computers.”

Stiennon said he did not think the outage revealed a bigger problem with the cybersecurity industry or CrowdStrike as a company.

“The markets are going to forgive them, the customers are going to forgive them, and this will blow over,” he said.

Forrester analyst Allie Mellen credited CrowdStrike for clearly telling customers what they need to do to fix the problem. But to restore trust, she said there will need to be a deeper look at what occurred and what changes can be made to prevent it from happening again.

“A lot of this is likely to come down to the testing and software development process and the work that they’ve put into testing these kinds of updates before deployment,” Mellen said. “But until we see the complete retrospective, we won’t know for sure what the failure was.”

___

Associated Press writer Alan Suderman in Richmond, Virginia, contributed to this report.

How a faulty CrowdStrike update crashed computers around the world (2024)

FAQs

What caused CrowdStrike failure? ›

On July 24, CrowdStrike reported on the testing process lapses that led to the flawed update being pushed out to customer systems. In its post-mortem, the company blamed a hole in its testing software that caused its Content Validator tool to miss a flaw in the defective Channel File 291 content update.

How did the CrowdStrike bug happen? ›

As CrowdStrike immediately explained to customers and the world, the problem was not a cyberattack but an error in the software update. Because the bug was in CrowdStrike's Falcon platform update for Microsoft Windows, computers using other operating systems (e.g. Mac and Linux) were not impacted.

How many computers were affected by CrowdStrike? ›

Microsoft appears to be pushing for security changes to Windows and greater cooperation with its cyber security partners, after a global outage saw around 8.5 million computers crash due to a bug in a software update released by security company CrowdStrike.

What problems does CrowdStrike solve? ›

CrowdStrike is the leader in next-generation endpoint protection, threat intelligence and response services. CrowdStrike's core technology, the Falcon platform, stops breaches by preventing and responding to all types of attacks — both malware and malware-free.

Why is CrowdStrike falling? ›

Shares of cybersecurity company CrowdStrike (CRWD -1.81%) continue to drop on Tuesday after its major software update problem of more than a week ago. The stock was already down more than 30% from recent highs, and investors might have thought that the worst was over once the problem had been corrected.

How does CrowdStrike Falcon update? ›

CrowdStrike delivers security content configuration updates to our sensors in two ways: Sensor Content that is shipped with our sensor directly, and Rapid Response Content that is designed to respond to the changing threat landscape at operational speed.

What went wrong at CrowdStrike? ›

The systems failure, Crowdstrike says, was caused by an automatic software deployment linked to the Rapid Response Content side of its Falcon security suite. A bug in Crowdstrike's automated testing process meant the software was approved even though the data contained in it was erroneous.

What exactly happened in CrowdStrike? ›

A massive technology outage linked to cybersecurity firm CrowdStrike Holdings Inc. may have been the largest tech disruption in history - and the company has tried to make up for it with some of its partners. CrowdStrike (CRWD) offered some partners a $10 Uber Eats (UBER) gift card, MarketWatch has confirmed.

Is CrowdStrike a malware? ›

CrowdStrike Falcon® MalQuery is an advanced, cloud-native malware research tool that enables security professionals and researchers to quickly search a massive dataset of malware samples, validating potential risks and stay ahead of would-be attackers.

How much RAM does CrowdStrike use? ›

Lightweight Agent. Crowdstrike's easy-to-deploy lightweight agent is managed by cloud resources instead of taking up local datacenter resources. The agent does not significantly impact endpoint performance and only requires 20.15 MB disk space, 25.36 MB Ram usage, and a maximum of 3.03% CPU usage.

Who are CrowdStrike major clients? ›

Customers of Crowdstrike
CustomersEmployee RangeCountry
Home Depot, Inc.10,000+United States
OSI Group LLC10,000+United States
iQor10,000+United States
Advantage Solutions10,000+United States
6 more rows

How do I remove CrowdStrike from my computer? ›

Uninstall from Control Panel
  1. Open the Windows Control Panel.
  2. Click Uninstall a Program.
  3. Choose CrowdStrike Windows Sensor and uninstall it.

How much did the CrowdStrike outage cost? ›

The massive CrowdStrike outage that affected millions of Microsoft devices is predicted to cost U.S. Fortune 500 companies $5.4 billion in total direct financial loss, with an average loss of $44 million per Fortune 500 company, according to new data from cloud monitoring and insurance firm Parametrix.

When was the CrowdStrike outage? ›

The CrowdStrike outage on 19 July 2024 had a devastating impact on businesses around the world. In Australia, where the outage hit during a workday, business leaders suggest the financial impact was over $1 billion.

What is the long term outlook for CrowdStrike? ›

Based on 37 Wall Street analysts offering 12 month price targets for CrowdStrike Holdings in the last 3 months. The average price target is $365.94 with a high forecast of $450.00 and a low forecast of $275.00. The average price target represents a 41.39% change from the last price of $258.81.

How does CrowdStrike prevent work? ›

State-of-the-art prevention

Our elite threat intelligence, industry-first indicators of attack, script control, and advanced memory scanning detect and block malicious behaviors earlier in the kill chain.

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