CrowdStrike says 97% of its Windows sensors are back online after global outage

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More than 97 percent of Windows sensors are back online, CrowdStrike CEO George Kurtz said Thursday, nearly a week after a software update from the cybersecurity company caused a global outage.

Microsoft said about 8.5 million Windows devices were affected by the outage

In the background of a computer screen, airplane passengers are seen, showing the blue screen of death.
A CrowdStrike software update last week caused Microsoft Windows to crash, causing a global technical outage. (Nathan Howard/Getty Images)

More than 97 percent of Windows sensors are back online, CrowdStrike CEO George Kurtz said Thursday, nearly a week after a software update from the cybersecurity company caused a global outage.

The company’s Falcon platform sensor is a security agent that installs on devices such as laptops and desktops and protects them from threats.

The outage occurred because the advanced platform contained a bug that caused computers running Microsoft’s Windows operating system to crash and display a so-called “blue screen of death” screen.

Microsoft said Saturday that about 8.5 million Windows devices were affected by the outage, which grounded flights, forced broadcasters off the air and left customers without access to services such as health care and banking.

“Our recovery operations have improved through the development of automated recovery techniques and by mobilizing all our resources to support our customers,” Kurtz said in a LinkedIn post.

WATCH | How a software update caused a global outage:

How CrowdStrike and Microsoft’s Global Tech Outage Unfolded

The National explains how a CrowdStrike software update crashed Microsoft Windows, causing a technical glitch that disrupted industries around the world. Ian Hanomansing asks cybersecurity expert Ritesh Kotek to explain how a similar glitch could have been prevented.

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