Exclusive A woman who passed national security information to UK authorities spent six months in fear for her life, after Tiscali published her phone number and address in public directories, despite repeated requests to keep the information secret.

Despite the guarantees, Tiscali provided BT with the woman's name address and phone number sometime before the end of November 2007, the deadline for inclusion in the next phone book. BT - which is not responsible for checking whether competitors' customers are ex-directory - duly published it in February 2008, online to the whole world, as well as in thousands of paper copies distributed locally.