Tesco’s chief executive said cyber security was a top priority, after a high-profile attack at competitor Marks & Spencer 
MKS, but added that the supermarket chain had not seen any material benefit to sales from problems at other retailers.
“This is probably top of my inbox on a daily, weekly basis. We stay on top of cyber all the time,” CEO Ken Murphy told reporters on Thursday. “We have invested continuously in upgrading our cyber capabilities, because this is a moving target all the time.”
