UK telco TalkTalk is investigating a potential data breach, after a threat actor offered the data of millions of its current and former customers on a cybercrime forum. The investigation is in progress, but the claims suggest a potential exfiltration of sensitive user data. This incident highlights the ongoing challenges of safeguarding user data in the telecommunications sector. The claims about data size might be overstated.
The fact that a threat actor is attempting to sell user data on a cybercrime forum is a big risk. The incident highlights the need for telcos to invest more into security practices. It also shows that customers are at risk of their data being exposed via a third party.