O2 have responded http://blog.o2.co.uk/home/2012/01/o2-mobile-numbers-and-web-browsing.html http://blog.o2.co.uk/home/2012/01/o2-mobile-numbers-and-web-... Se

O2 have responded http://blog.o2.co.uk/home/2012/01/o2-mobile-numbers-and-web-browsing.html http://blog.o2.co.uk/home/2012/01/o2-mobile-numbers-and-web-... Selected highlights: Q: How long has this been happening? A: In between the 10th of January and 1400 Wednesday 25th of January, in addition to the usual trusted partners, there has been the potential for disclosure of customers’ mobile phone numbers to further website owners. Q: Has it been fixed? A: Yes. It was fixed as of 1400 on Wednesday 25th January 2012. [edited to add] I find this a bit weaselly: Q: Which websites do you normally share my mobile number with? A: Only where absolutely required by trusted partners who work with us on age verification, premium content billing, such as for downloads, and O2's own services, have access to these mobile numbers.