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![A Windows-based supermarket self-service kiosk suffers the 'blue screen of death' during the IT outage caused by a buggy update to CrowdStrike's security software. Photo / NZME](https://www.newstalkzb.co.nz/media/fdiluyzw/self-service-checkouts-are-still-plagued-by-the-blue-screen-of-death-at-woolworths-metro-in-aucklands-victoria-st-west.jpg?rmode=crop&rnd=133663744952200000&height=395&quality=95&scale=both)
Many companies are still recovering after Friday's global IT outage impacted retailers, banks - and even airlines.
Friday's update by cyber security firm CrowdStrike created technical problems for several major businesses, resulting in the company's value dropping by $20 billion.
Tech commentator Paul Spain says many companies will see the risks of putting all their IT in one basket - and attempt to rectify that.
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