内容摘要：M&S has not commented on the nature of the cyber attack, which is not unusual in cases like this, but experts say the uncertainty risks damaging consumer trust in the brand.

M&S has not commented on the nature of the cyber attack, which is not unusual in cases like this, but experts say the uncertainty risks damaging consumer trust in the brand.

However, later reports suggested that some stores did not have all the items needed to make up meal deal offers.An M&S spokesperson said: "Customers can still buy meal deals in our rail station stores but there are pockets of availability for some items. We are working hard to continue getting our products into stores."

In addition, the company has pulled all job adverts from its website, with a message saying: "Sorry you can't search or apply for roles right now, we're working hard to be back online as soon as possible."There has been silence from M&S on what or who was behind the attack on its systems, but we now know it was a ransomware attack.This is a type of malicious software used to scramble important data or files after gaining access to a business' computer systems, essentially locking them away unless a ransom is paid.

Hackers often threaten to leak or sell the data to pressure a business to pay up.A ransomware group called "DragonForce" told the BBC it was responsible for the attack on M&S, the

and an attempted hack of

and said there would be more attacks soon.Dignity in Dying said the campaign used "positive imagery" and was fully compliant with the Committee of Advertising Practice code. Transport for London said the adverts were compliant with its advertising policy.

for England and Wales on Friday.Some of the posters on the network have been covered by posters for the Samaritans. The organisation said it had not sanctioned this.

A spokesperson for Dignity in Dying said its advertising campaign, Let Us Choose, featured real people who wanted a change in the law on assisted dying, either because they were terminally ill and wanted the choice, or because their loved one wanted the choice but had been denied it."The campaign uses positive imagery of these people living life on their own terms, alongside messages about why they are campaigning for greater choice," the spokesperson said.