The U.K. police have arrested a second teen in the breach of the ISP TalkTalk. A 20-year-old man was arrested after police executed a search warrant at an address in south Staffordshire, the Metropolitan Police said Sunday.

What was stolen in the breach was 21,000 unique bank account numbers and sort codes, 28,000 credit and debit card details, 15,000 customer birth dates and 1.2 million email addresses, names and phone numbers. This was the third such breach of TalkTalk in the last year.

Both boys have been bailed out of jail. They have both been accused of suspicion of violations of the Computer Misuse Act.

TalkTalk has maintained that criminals would need further information to make use of people's bank account numbers and sort codes for fraud. As a precaution, they have alerted banks to the breach to look for fraud. The company is offering a year's worth of free credit monitoring to those affected through Noddle. It also said it will waive the termination fee charged for leaving TalkTalk while under contract if a customer can prove a fraudulent transaction occurred after the data breach.

Source: PCWorld