AUSTIN, Tex. (NEWSnet/AP) — Cybersecurity firm CrowdStrike says a “significant number” of the millions of computers that crashed on Friday, causing global disruptions, are back in operation as its customers and regulators await more details of what went wrong.

A defective software update sent by CrowdStrike to its customers disrupted airlines, banks, hospitals and other critical services Friday, affecting about 8.5 million machines running Microsoft’s Windows operating system.

The work of fixing it has required a company’s IT crew to manually delete files on affected machines.

CrowdStrike said late Sunday in a blog post that it was starting to implement a new technique to accelerate remediation of the problem.

Shares of the Texas-based company have dropped nearly 30% since the meltdown, knocking off billions of dollars in market value.

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