Asia Tech Wire (Aug 1) -- U.S. cybersecurity firm CrowdStrike is facing a class action lawsuit from shareholders over a global IT outage linked to Microsoft.

CrowdStrike shareholders filed a class-action lawsuit Tuesday night in U.S. federal court in Austin, Texas.

Shareholders claim they learned that CrowdStrike's assurances about its technology were materially false and misleading when a flawed software update disrupted airlines, banks, hospitals and emergency lines around the world.

In response, CrowdStrike issued a statement on Wednesday saying, "We believe this case lacks merit and we will vigorously defend the company."

A few weeks ago, the release of a software update for CrowdStrike resulted in a massive outage of Microsoft Windows and some of Microsoft's other applications and services, affecting businesses and users around the world.