BA is announcing a data breach from its website and app between 22:58 BST August 21 2018 until 21:45 BST September 5 2018 inclusive. Financial data of customers using both booking routes was compromised. BA will be contacting those impacted to tell them. I have received an email advising me to contact my bank or credit card provider and follow their advise!

The announcement says that the bug which allowed this to happen has been fixed.

The FAQ’s say that no passport data has been stolen!

These are the Q&A’s posted by BA:

How do I know if I have been affected?

This relates to customer bookings made from 22:58 BST August 21 2018 to 21:45 September 5 2018 inclusive. We will be contacting affected customers directly to advise them of what has happened and are advising them to contact their banks or credit card providers and follow their recommended advice.

Will there be any compensation?

We take the protection of our customers’ data seriously, and are very sorry for the concern that this criminal activity has caused. We will continue to keep our customers updated with the very latest information. We will be contacting customers and will manage any claims on an individual basis.

What data has been lost?

The personal and financial details of customers making bookings on ba.com and the airline’s mobile app were compromised. No passport or travel details were stolen.

How do I reset my ba.com password?

Click the Forgotten Pin/Password link on the top right-hand corner of the ba.com homepage.

We recommend you choose a unique password that you do not use for any other online account.

Should I call my bank or cancel my credit cards?

We recommend you contact your bank and follow their recommended advice.

What shall I do if I am due to travel today?

The incident has been resolved and all systems are working normally so customers due to travel can check-in online as normal.

Will I still be able to check in?

Yes, all customers booked on our flights will be able to check in as normal.

Will this affect any future bookings?

The incident has been resolved and ba.com is working normally so future bookings will not be affected.