Following the phone and broadband service provider TalkTalk's Oct. 21 cyber attack which they find as among the biggest threats to companies, business leaders are calling for urgent action. The government, meanwhile, said it is "committed to tackle cyber crime."

Some TalkTalk customers complained that their credit cards or bank accounts were targeted. A customer said she lost £600 but the bank said she will be refunded.

"I'm still very angry [about] the fact that my details are potentially out there somewhere on the internet and I'm going to have to keep checking my bank statements now for a long time," customer Hilary Foster told BBC.

Barbara Manley shared that her husband's bank account lost £9,000 on Wednesday following a call from someone allegedly from TalkTalk on Sunday and Tuesday.

"They appeared to know all about us and asked my husband to start the computer up and it went on from there. It all seemed so genuine." Their daughter suggested TalkTalk might already knew about the cyber attack and did not warn customers because when her father complained to the company, it apologized and sent a Freeview box.

TalkTalk is said to be investigating the cyber attack as well as customer complaints and queries, but is not giving comment on individual cases. There is a possibility that what its customers suffer "may not be the result of the cyber attack" and there are no arrests made. Up to four million of TalkTalk customers may have been affected and it does not know how much customer information was encrypted.

Speaking to BBC Breakfast, cyber crime consultant Adrian Culley said the attackers have got "high value" information and it will take time to "fully investigate" the case, and that he already had seen a somewhat TalkTalk customer bank details online with redacted account numbers.

TalkTalk has announced on its website they will support those who were affected while working with the authorities after the attack.