TalkTalk faces tough questions from everyone right now. Customers, banks and the Information Commissioner's Office will all be keen to know what TalkTalk did wrong, and why customer data was so easy to steal. However, yesterday police arrested a 15-year-old boy in connection with the hack.

TalkTalk claims that exposed in the theft were address and date of birth details for customers, but it claims credit card numbers were not kept on its servers in an unencrypted form. However the problem still remains that some customers were getting phone calls, and possibly faked emails that might lead them to reveal more personal details to people who had access to the hacked information.

TalkTalk shares took a hammering early on, but are showing signs of recovery now. Perhaps the fact that the firm still has a lot of customers is keeping interest in them high, even with such a data breach. The company is offering all its customers a year of identity theft protection over the incident, but it's not clear how customers will be affected.