 It's tied to a software update that cybersecurity firm CrowdStrike sent out to Windows computers overnight. The faulty update appears to send computers and servers into a recovery boot loop, essentially starting the computer up over and over again but never logging in. CrowdStrike CEO George Kurtz posted on social media that this is not a security incident or a cyber attack and that a fix has been deployed. He also says Mac and Linux computers are unaffected. Mike Dubosky.