 Millions of computers had a Windows update on Friday that CloudStrike included some untested code. Their widely used Falcon sensor software is causing Microsoft Windows to crash and display what's known as the blue screen of death. Ciaran Martin, former head of national cybersecurity for Great Britain's intelligence agency, said the scale of the problem was huge. The global tech outage affected hundreds of different sectors internationally, including Australian media, banks and government, U.S. airlines,