“CrowdStrike is actively working with customers impacted by a defect found in a single content update for Windows hosts. Mac and Linux hosts are not impacted,” Kurtz noted on X.
“This is not a security incident or cyberattack. The issue has been identified, isolated, and a fix has been deployed. We refer customers to the support portal for the latest updates and will continue to provide complete and continuous updates on our website. We further recommend organizations ensure they’re communicating with CrowdStrike representatives through official channels. Our team is fully mobilized to ensure the security and stability of CrowdStrike customers,” Kurtz said.
Microsoft’s Involvement
Later that Friday, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) stated that while the outage wasn’t linked to any suspicious activity, it had observed threat actors taking advantage of the incident for phishing and other malicious activities.
Microsoft began noticing problems in the early hours of July 19. The Service Health page for Microsoft 365 indicated that services for consumers were restored, but enterprise applications were still experiencing disruptions.
