Cybercriminals were able to gain access to thousands of British Airways Executive Club frequent-flyer accounts. It doesn't appear any personal information was viewed or taken during the breach, and British Airways has frozen accounts while an investigation is underway.
"British Airways has become aware of some unauthorized activity in relation to a small number of frequent-flyer executive club accounts," a British Airways spokesperson confirmed to The Guardian.
It remains unknown who is responsible for the Executive Club system intrusion.
"This appears to have been the result of a third party using information obtained elsewhere on the Internet, via an automated process, to try to gain access to your Executive Club account," says an email from British Airway's Executive Club team to customers. "We understand this was login information relating to a different online service which you may have also used to access your Executive Club account."