SOURCES claim M&S had no plan for how to deal with a cyber attack and it could be months before it fully recovers.
The retailer has been forced to suspend online orders and freeze recruitment due to a severe hack.

The upmarket High Street brand was plunged into “pure chaos” last week, with staff having to use their personal devices for work.
Employees have no idea whether hackers are still inside the M&S system, it’s been claimed.
The retailer is the latest victim in a series of ongoing cyber attacks, with Harrods and Co-op also targeted.
Speaking to Sky News, an insider claimed M&S “didn’t have a cyber attack plan” and there is a “lot of stress” in the head office right now.
“People have not been sleeping, people have spent their weekends working, people sleeping in the office – just reactive response,” they said.
It could even be a matter of months before things are back to normal.
“The idea is to have some services go back online bit by bit. Not do the whole shebang, but allow the people in the store and to allow people online to have services.”
There is a “sense of paranoia” because no one knows who has been “compromised”, they added.
The High Street brand earlier revealed it has still been unable to get its services back to normal following a crippling cyber attack.
It said it was “really sorry” it hasn’t been able to offer its usual services this week.
“We are working day and night to manage the current cyber incident and get things back to normal for you as quickly as possible,” chief executive Stuart Machin said in a statement.
“Thank you from me and everyone at M&S for all the support you have shown us. We do not take it for granted and we are incredibly grateful.
“Our teams are doing the very best they can, and are ready to welcome you into our stores – whether you are shopping for food or for fashion, home and beauty this bank holiday weekend.
“Thank you for your support and thank you for shopping with us. We will continue to keep you updated.”
The supermarket first revealed it had been hit by a major cyber attack on Monday, April 21.
Customers first noticed contactless payments going down and disruption to click and collect orders.
The supermarket was then forced to suspend all online orders through its website and app on Friday.
