UK's TalkTalk says cyber attack could affect 4 million customers

Britain's TalkTalk said a "significant and sustained" cyber attack on its website could involve the theft of private data from all of the broadband supplier's more than 4 million customers. "Investigation is ongoing but unfortunately there is a chance that some of the following data has been compromised: names, addresses, date of birth, phone numbers, email addresses, TalkTalk account information, credit card details and/or bank details," the company said in a statement late on Thursday. Chief E