AT&T recently exposed sensitive customer data to purchasers of Apple's iPhone 4.

"For the second time in less than a week, Gizmodo reported, AT&T was caught exposing private information belonging to Apple customers," writes The Register's Dan Goodin. "The breach came when existing iPhone owners placed advanced orders for the newest iPhone, which is scheduled to go on sale on June 24."

"After entering their account credentials, certain customers were logged in to accounts belonging to other users, potentially exposing the names, addresses, and phone logs of an unknown number of people, the website said," Goodin writes.

Click here to read the article at The Register.