Originally Posted by
Deltus
It's in the FAQs on the BA press release - apparently app bookings were not affected.
https://www.britishairways.com/travel/Flightops/public/en_gb
Still didn't stop them sending me an email!
While we do not have conclusive evidence that the data was removed from British Airways’ systems, it is possible your personal data may have been compromised. This includes your full name, billing address, email address and payment card details. Your CVV number has remained confidential. As a precaution we recommend you contact your bank or card provider and follow their advice.