It was revealed last week that more British Airways customers, 185,000 to be specific, were affected by the cyber attack, according to its owner IAG.
Customers may have had their personal details stolen during the attack, it said.
In a stock exchange announcement, IAG said that as part of an investigation into a cyber breach that took place earlier this year, it is contacting two groups of customers who were not previously informed of the attack.
According to The Independent, the information compromised includes the name, billing address, email address and card payment information (card number, expiry date and Card Verification Value) of 77,000 card holders.
A further 108,000 people’s personal details without Card Verification Value have also been compromised.
Those affected were people who used a payment card to make reward bookings between April 21st and July 28th this year.
In September, thousands of BA customers had to cancel their credit cards after the airline admitted that a 15-day data hack compromised 380,000 payments, which prompted a criminal enquiry by the National Crime Agency (NCA).
Last week the firm said that 244,000 out of the 380,000 payment card details identified were affected.
IAG said: “While British Airways does not have conclusive evidence that the data was removed from its systems, it is taking a prudent approach in notifying potentially affected customers, advising them to contact their bank or card provider as a precaution,”
“Since the announcement on September 6, 2018, British Airways can confirm that it has had no verified cases of fraud.”
BA’s data breach took place after the introduction of the new Data Protection Act, which includes the provisions of the new European General Data Protection Regulation (GDPR).
As a result of the data breach, British Airways is facing a multi million pound fine.
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