BA's chairman and chief executive commented: " We are surprised and disappointed in this initial finding from the ICO. British Airways responded quickly to a criminal act to steal customers' data. We have found no evidence of fraud/fraudulent activity on accounts linked to the theft. We apologise to our customers for any inconvenience this event caused. " International Airlines Group's (BA's parent company) chief executive confirmed that BA will defend itself, commenting: " British Airways will be making representations to the ICO in relation to the proposed fine.