British carrier O2 has been accused of revealing customers' phone numbers to Web sites they visit on their mobile devices. The issue was brought to light by Lewis Peckover, who set up a Web site that ...

The mobile phone operator O2 is investigating a major security flaw which gives users' mobile phone numbers to every website they visit. Twitter users Lewis Peckover created a website on January 24 ...

Mobile telecommunications operator O2 sends its customers’ telephone numbers to website operators when they visit their sites from their mobile phones, an engineer has discovered. Lewis Peckover, a ...

An O2 ‘agent error’ has taken a customer's phone number and put their "life on hold". The customer, known only as RM, is situated in Surrey in the south of England and has reached out to the Guardian ...

Mobile phone network operator O2 is urging customers to call a three-digit number and, if necessary, contact their bank as part of its latest alert. In a fresh wave of text messages and emails being ...