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Why is the M&S cyber attack chaos taking so long to resolve?

The company not saying who carried out the attack - or when their systems will be restored - suggests it's serious.

M&S still isn't revealing exactly what or who knocked out its online ordering systems, paused deliveries, left empty shelves in stores, and resulted in limited access to internal platforms ("they're using pen and paper mate," one contact told me). But trying to find and stop malware sweeping through systems and causing havoc on the scale of those operated by a large nationwide retailer like M&S, is not a quick job says Professor Alan Woodward, a cybersecurity expert from Surrey University. Rik Ferguson, special advisor to Europol's European Cyber Crime Centre, says the sources of speculation about the group's involvement seem credible but adds that he has seen no conclusive evidence so far.

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