An investigation into a data hack at British Airways has revealed an extra 185,000 customers details have been accessed, the airline says.
In September, the company announced the information of 'hundreds of thousands' of customers had been accessed, but didn't specify an exact number.
The British Airways data hack is different to the Cathay Pacific attack announced yesterday, as in the case of the UK-based airline, the majority of customers' credit card information has been accessed.
Cathay Pacific said less than 30 credit card numbers were accessed when they suffered a hack that involved 9.4 million customers.
British Airways is in the process of alerting 77,000 passengers whose payment card, name, address, email address, expiry date and security codes have been compromised. A further 108,000 had their information accessed, except for the security code.
The number of credit cards compromised is estimated to be around 429,000.
A British Airways spokeswoman told Reuters the airline would reimburse customers who suffered financial losses as a direct result of the data theft.