Update: Mobile operator O2 says that as of 2pm Wednesday, it has fixed the part of its mobile web browsing service that was reporting mobile phone users’ telephone numbers to websites they visited via ...

O2, once Apple’s exclusive cell phone company reseller of iPhones in the UK, has been caught exposing user phone numbers in the headers sent to websites its customers visit while using its 3G network.

LONDON (AP) - An untold number of U.K. residents may have unwittingly broadcast their numbers to sites across the Web while browsing the Internet with their cellphones during the past two weeks.

UK carrier O2 finds itself embroiled in data protection controversy today, with allegations that the operator is revealing mobile users cellphone number to each website they visit on their phone.

O2 may also be unwittingly assisting spammers, allowing them to match email addresses with phone numbers. See below for more updates. If you reside in the UK and you are one of the millions of ...

Research carried out by Virgin Media O2 has found that millions of people are likely to have seen fake customer service numbers using search engines and AI tools. It has also dealt with customers who ...

O2 says it has now fixed a data breach which saw mobile internet users' phone numbers given out to websites. The mobile giant admits a technical glitch meant customers' numbers were sent to website ...