O2 has blocked asecurity holethat allowed its
customers to view text messages sent by other UK subscribers
online, reports The Register.
The problem involved O2's
Bluebook
application, which allows subscribers to save text messages they
send or receive for viewing online.
But O2 coding errors in Bluebook allowed registered users to
view other customers' messages and phone numbers, by simply
changing the message ID number in URLs used to access messages on
the site.
O2 told The Register it had fixed the problem.