TalkTalk has a clearer idea of how much data was exposed Credit: UK police arrested a third suspect on Saturday relating to the breach at communications provider TalkTalk, which said the amount of data exposed is less than initially thought.A 20-year-old man was arrested after police executed a search warrant at an address in south Staffordshire, the Metropolitan Police said Sunday.The man, who was not identified, was arrested on suspicion of violations of the Computer Misuse Act and was later bailed. UK police arrested a 15-year-old boy in County Antrim, Northern Ireland, on Oct. 26, and a 16-year-old boy in Feltham, England, on Thursday. Both boys have been bailed. TalkTalk’s website was breached on Oct. 21, exposing customer names, addresses, birth dates, email addresses, phone numbers, account information, payment card and bank account details. In a video, TalkTalk CEO Dido Harding said “the extent of the data accessed is significantly less than originally suspected.” Less than 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 were exposed, according to an advisory.For the payment card details, the middle six digits were removed, TalkTalk said. That would make the numbers less useful for cybercriminals. U.K. banks have also been notified of the leaked bank details in order to closely watch those accounts for fraud.TalkTalk has maintained that criminals would need further information make use of people’s bank account numbers and sort codes for fraud.Harding said the investigation into the attack continues with the Metropolitan Police’s Cyber Crime Unit.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. The breach marked the third one for TalkTalk this year, which prompted criticism that the company hasn’t done enough to shore up its cybersecurity defenses. Related content news Arm patches bugs in Mali GPUs that affect Android phones and Chromebooks The vulnerability with active exploitations allows local non-privileged users to access freed-up memory for staging new attacks. By Shweta Sharma Oct 03, 2023 3 mins Android Security Android Security Mobile Security news UK businesses face tightening cybersecurity budgets as incidents spike More than a quarter of UK organisations think their cybersecurity budget is inadequate to protect them from growing threats. By Michael Hill Oct 03, 2023 3 mins CSO and CISO Risk Management news Cybersecurity experts raise concerns over EU Cyber Resilience Act’s vulnerability disclosure requirements Open letter claims current provisions will create new threats that undermine the security of digital products and individuals. By Michael Hill Oct 03, 2023 4 mins Regulation Compliance Vulnerabilities feature The value of threat intelligence — and challenges CISOs face in using it effectively Knowing the who, what, when, and how of bad actors and their methods is a boon to security, but experts say many teams are not always using such intel to their best advantage. By Mary K. Pratt Oct 03, 2023 10 mins CSO and CISO Advanced Persistent Threats Threat and Vulnerability Management Podcasts Videos Resources Events SUBSCRIBE TO OUR NEWSLETTER From our editors straight to your inbox Get started by entering your email address below. Please enter a valid email address Subscribe