(REUTERS) — LONDON - British Airways said on Sunday tens of thousands of its frequent flyer accounts had been hacked and that it had frozen those affected to sort the problem out.
The airline said no personal information had been viewed or stolen, but warned customers that some fliers might not be able to temporarily use their air miles.
It said the problem concerned a small number of its millions of customers and that it expected the system to be back to normal in the next day or so.
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"British Airways has become aware of some unauthorized activity in relation to a small number of frequent flyer executive club accounts," a spokesman said.