Arizona’s emergency response systems at major police agencies and health care providers were snarled as part of a global tech outage linked to an issue with a large cybersecurity firm.Australia’s government said the outage appeared to be linked to an issue at cybersecurity firm CrowdStrike, which is used by over half of Fortune 500 companies, the U.S. firm said in a promotional video this year.Here’s what to know about CrowdStrike, what caused the outage and which Phoenix groups were impacted.Public safety:911, other Phoenix area emergency systems affected by software outageWhat is CrowdStrike?Cybersecurity firm CrowdStrike is used by over half of Fortune 500 companies, the U.S. firm said in a promotional video this year.According to an alert sent by CrowdStrike to its clients and reviewed by Reuters, the company’s “Falcon Sensor” software is causing Microsoft Windows to crash and display a blue screen, known informally as the “Blue Screen of Death.”The alert, sent at 1:30 a.m. ET on Friday, also shared a manual workaround to rectify the issue. A CrowdStrike spokesperson did not respond to emails or calls requesting comment.In a post on X, CrowdStrike CEO George Kurtz said the company is “actively working with customers impacted by a defect found in a single content update for Windows hosts.” Kurtz also clarified that the incident is “not a security incident or cyberattack.”In the post, Kurtz says the issue has been identified, a fix has been deployed, and that the company will “continue to provide complete and continuous updates on our website.” Addit …
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