# Businesses and services around the world are slowly recovering after a massive IT outage affected computer systems for hours on Thursday and Friday. Businesses, banks, hospitals and airlines were among the worst-hit after cyber-security firm CrowdStrike issued a faulty software update which affected Microsoft Windows. Although a fix had been issued, CrowdStrike admitted it could be some time before all systems were back up and running. The global chaos has sparked concern over the vulnerability of the world’s interconnected technologies, and the extent to which a single software glitch could have such widespread impact.
Global services slowly recovering after IT chaos