On 19th May 2020 EasyJet reported that data has been breached. Details of up to 9 million customers and 2000 credit cards were stolen. This is what EasyJet have said:-
Following discussions with the Information Commissioner's Office ("ICO"), the Board of easyJet announces that it has been the target of an attack from a highly sophisticated source. As soon as we became aware of the attack, we took immediate steps to respond to and manage the incident and engaged leading forensic experts to investigate the issue. We also notified the National Cyber Security Centre and the ICO. We have closed off this unauthorised access.
Our investigation found that the email address and travel details of approximately 9 million customers were accessed. These affected customers will be contacted in the next few days. If you are not contacted then your information has not been accessed.
For details take a look at TheRegister
or Easy Jet's Corporate site story