Budget airline carrier EasyJet was hacked in January 2020 hacked and has exposed the personal details of approximately nine million customers.

The firm has informed the UK’s Information Commissioner’s Office while it investigates the breach.

The company admitted that “highly sophisticated” hackers had breached its systems, accessing email addresses and travel details held by the organisation. Some also had their credit card details exposed

It said email addresses and travel details had been stolen and that 2,208 customers had also had their credit card details “accessed”.

The firm told the BBC that it had only been able to notify customers whose credit card details were stolen in early April.

It added that it had gone public now in order to warn the nine million customers whose email addresses had been stolen to be wary of phishing attacks.