Rising cyber threats: Here is how to protect yourself from SIM-swap fraud

Our mobile phone numbers have become a de facto form of identification, but they can be hijacked for nefarious purposes. Just such an attack may have been involved in the recent very damaging cyber-attack on Marks & Spencer (M&S).

The hack happened in April and forced M&S to stop taking online orders. It also caused disruption to some of its stores. The company has said that its online business could be disrupted into July and could result in an estimated £300m hit to profits.