LONDON, May 21 (Reuters) - The chief executive of Marks & Spencer said on Wednesday he could not comment on whether the retailer had paid a ransom in a cyber attack which has cost it about 300 million pounds ($402.39 million) and which he said was the result of "human error". ($1 = 0.7455 pounds) (Reporting by James Davey and Paul Sandle, writing by Sarah Young, editing by Catarina Demony)

Sainsbury's benefited from M&S cyber attack, CEO says
LONDON, July 1 (Reuters) - British supermarket Sainsbury's benefited "a little bit" from the cyber attack at competitor Marks & Spencer, which disrupted trading between April and June, Sainsbury's CEO said, after it reported a 4.7% jump in quarterly sales.
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