TalkTalk boss: we're unsure how many customers affected by cyber-attack – video

Baroness Dido Harding, the chief executive of TalkTalk, confirms the company has been working to ensure all of its customers have been informed that their personal data may have been compromised following a cyber attack. Harding says that customers should be wary if they receive an unexpected phone call purporting to be from TalkTalk and asking for personal information. She says this call would not come from a TalkTalk representative, but rather someone who could be attempting identity theft