CrowdStrike says significant number of devices back online after global outage

But experts says full recovery from Friday’s IT failure could take weeks

A “significant” number of the 8.5m devices affected by last week’s global IT outage are back online, according to the cybersecurity company at the centre of the incident.

CrowdStrike said it was also testing a technique to reboot systems more rapidly, amid warnings from experts that a full recovery from Friday’s IT failure could take weeks.