"Several security experts said they had not heard of a case like this........"
These security experts must all be young people. I was involved in fixing these types of problems thirty years ago with predecessor technologies. We even had a name for it back then - 'tailgating'.
Besides alerting customers of AT&T Wireless about this present glitch, the story should make people aware that system glitches can allow you to get into someone else's password-protected account - facebook, bank account, email, etc. if the logical connections in the Internet get discombobulated. I even saw this happen back in the days of dial-up into modem pools connected to a time-sharing computer. Since those days, I always use the built-in "logout" function of a system, rather than simply disconnecting.
In the early days of the Internet, I did get into several other persons' accounts due to system glitches. My standard response was to log out the connection in software. I then reported the problem, both to my carrier and the site I was connected to.
There are still some people in AT&T (SBC & ATT) who are cocksure of themselves that they are always right, and blow off customers. As CCinNJ related, AT&T can't always solve the problem correctly the first time.
<message edited by David_NYC on Sat, 01/16/10 1:06 PM>