Shares in Tesco (TSCDY) , Britain’s biggest supermarket chain, fell sharply Monday following a weekend cyber attack on 40,000 accounts at its online banking arm.
“Tesco Bank can confirm that, over the weekend, some of its customers’ current accounts have been subject to online criminal activity, in some cases resulting in money being withdrawn fraudulently,” Tesco Bank CEO Benny Higgins said in a statement.
Wholly-owned Tesco Bank, which has 136,000 current accounts, has frozen all online banking transactions from current accounts and said it would refund those which had money stolen.
