LONDON -- A 16-year-old boy was arrested in Norwich on Tuesday night following the TalkTalk cyberattack, the fourth arrest since the incident, the Metropolitan Police have said.
Detectives from the Metropolitan Police Cyber Crime Unit (MPCCU) and officers from the National Crime Agency (NCA) searched an address in the city before arresting him on suspicion of Computer Misuse Act offences. He's been released on bail until late March 2016.
A 20-year-old man was arrested in Staffordshire on Saturday, a 16-year-old was detained in Feltham the previous Thursday, and a 15-year-old was arrested in Northern Ireland on Monday, Oct. 26, all on suspicion of Computer Misuse Act offences. All have been bailed for the time being.
A boy arrested in connection with the TalkTalk investigation has been bailed https://t.co/4gt2FwDbJh pic.twitter.com/TBwXrFDhxa— Metropolitan Police (@metpoliceuk) November 4, 2015
The MPCCU launched a criminal investigation following the cyberattack on Oct. 21, in which customers' private information -- including names, addresses, dates of birth, email addresses, telephone numbers, TalkTalk account information, credit card details and bank account information -- were accessed.
The scale of the data breach was not initially fully known, but TalkTalk have since specified the number of accounts affected:
Less than 21,000 unique bank account numbers and sort codes
Less than 28,000 obscured credit and debit card details (as previously stated, the middle 6 digits had been removed)
Less than 15,000 customer dates of birth
Less than 1.2 million customer email addresses, names and phone numbers
They added:
As we have previously confirmed, the credit and debit card details cannot be used for financial transactions. The bank account details that were accessed are, on their own, not enough to take money from your account and are the same as would be found on a cheque. We have also contacted major banks to inform them of the affected bank accounts.
They said they will be contacting affected customers.
Anyone who thinks they've been directly affected by the alleged data theft can visit Talk Talk's information page for more.