Knowledge Base

O2/Giffgaff send out mobile number to each webpage visited - why?

Started by: jacobk
On: 25/01/2012 | 09:20
Replies: 11

by: jacobk
on: 25/01/2012 | 09:20 edited: 25/01/2012 | 13:08

If you check out this page while using Giffgaff data, you'll see that your mobile number has been sent to the website in the header, along with the usual information like browser etc. As far as I can tell this is breach of privacy.


Could someone tell me


-Why O2/Giffgaff do this?

-How I can disable this?




giffgaff staff edit - 25/01 -12:54


Good afternoon,


We've locked this thread for the time being - not to stop discussion, but because we'd like to update everyone in one place on this.


Please keep an eye on this thread here.


Kind regards,



Message 1 of 12
by: tallpaul
on: 25/01/2012 | 09:29

I suspect the short answers are: "because they can" and "no you can't".


It is incredibly sucky. There's always been a need for browsers to reveal some information to the server so that it can render pages correctly, like the IP address of the person requesting the page and their browser type but this really is taking things too far. Hopefully when the word gets out (as it is on Twitter now for example) O2 will stop doing it.

Tall Paul
Message 2 of 12
by: tallpaul
on: 25/01/2012 | 09:34 edited: 25/01/2012 | 09:35

Further to the above if you're on Twitter it's worth posting about it: people are starting to pick up on this now and a storm is brewing nicely.

Tall Paul
Message 3 of 12
by: qasman
on: 25/01/2012 | 09:41
Something needs to be done about this explanation an explanation as to why our number is given out.
Also known as quetonix
Message 4 of 12
by: kungfusi
on: 25/01/2012 | 09:44
now the problem has been brought to light im sure something will be done about it!
Message 5 of 12
by: cim
on: 25/01/2012 | 09:46

Wow. Sounds like somebody slipped up at O2:


Assuming so I hope and expect it will be rectified urgently.



Get a free Giffgaff SIM posted to you pronto
Message 6 of 12
by: stuaxo
on: 25/01/2012 | 09:53
Just checked and it def does it on my 3gs, pretty poor !
Message 7 of 12
by: up_the_saddlers
on: 25/01/2012 | 09:58
O2 should offer all o2, tesco and giffgaff customers that use data compensation for a clear breach of privacy. They should also compensate giffgaff and tesco for damaging their names, although this is less likely to happen with giffgaff because o2 own them.
Get a free Giffgaff SimOr for a pre-cut giffgaff micro sim (for iphone 4) , also with £5 free credit, complete this form
Message 8 of 12
by: tomekndnb
on: 25/01/2012 | 10:08
This is absolutely unacceptable. How did O2 manage to drop the ball so hard?
Message 9 of 12
by: ryaneberry
on: 25/01/2012 | 11:21
the question is why has all the articles and reports only started today?

Has the information only come out today?
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Message 10 of 12