AT&T network flaw causes people to access other people's facebook account...
SAN FRANCISCO (AP) -- A Georgia mother and her two daughters logged onto Facebook from mobile phones last weekend and wound up in a startling place: strangers' accounts with full access to troves of private information.
The glitch -- the result of a routing problem at the family's wireless carrier, AT&T -- revealed a little known security flaw with far reaching implications for everyone on the Internet, not just Facebook users.
In each case, the Internet lost track of who was who, putting the women into the wrong accounts. It doesn't appear the users could have done anything to stop it. The problem adds a dimension to researchers' warnings that there are...
(continues)
For years web designers had to handle this situation when ISPs like AOL used to proxy the web requests through a group of servers. People visiting the web site through AOL were certain to share an IP address.
While AT&T has a problem, Facebook has the larger problem because their basic authentication process is seriously flawed.