A fault with an update issued by cybersecurity company CrowdStrike led to a cascading effect among global IT systems Friday, with industries ranging from banking to airlines facing outages. Banks and health care providers saw their services disrupted and television broadcasters went offline as businesses worldwide grappled with the ongoing outage. Air travel has been hit hard, too, with planes grounded and services delayed. At the heart of the issue is the Texas-based cybersecurity vendor CrowdStrike. On Friday, the cybersecurity firm experienced a major disruption following an issue with a software update. So what happened, exactly? CNBC takes a look. CrowdStrike is a cybersecurity vendor that develops software to help companies detect and block hacks. It is used by many of the world’s Fortune 500 companies, including major global banks, health care and energy companies. CrowdStrike is what’s known as an “endpoint security” firm as it uses cloud technology to apply cyber protections to devices…
