Email Addresses and SIM Identifiers of 114,000 AT&T iPad 3G Users Exposed - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Email Addresses and SIM Identifiers of 114,000 AT&T iPad 3G Users Exposed

172558 ipad 3g badge

Valleywag reports that a security breach on AT&T's website has allowed public access to email addresses and SIM card identifier numbers (known as ICC-IDs) for 114,000 iPad Wi-Fi + 3G users on the company's cellular network.

The breach, which comes just weeks after an Apple employee lost an iPhone prototype in a bar, exposed the most exclusive email list on the planet, a collection of early-adopter iPad 3G subscribers that includes thousands of A-listers in finance, politics and media, from New York Times Co. CEO Janet Robinson to Diane Sawyer of ABC News to film mogul Harvey Weinstein to Mayor Michael Bloomberg. It even appears that White House Chief of Staff Rahm Emanuel's information was compromised.

The security hole, which has been closed by AT&T, appears to have been related to data meant for a Web application accessible on the iPad. Those who discovered the hole were able to guess large swaths of ICC-ID numbers based on a handful of known numbers and use a script paired with an iPad user agent setting on their browser to query the email addresses associated with the ICC-IDs.

Beyond the obvious privacy implications of having personal email addresses exposed, it is unclear exactly what the ramifications of the security breach are. Despite claims from those who discovered the breach that the information might be able to be used to spoof devices or intercept data, other security researchers do not believe that to be possible. AT&T and Apple have yet to comment on the situation.

Popular Stories

iPhone 18 Pro Deep Red Feature

iPhone 18 Pro Launching in Two Months With These 12 New Features

Friday July 17, 2026 10:39 am PDT by
It is now mid-July, and that means the iPhone 18 Pro and iPhone 18 Pro Max are now just two months away. The devices are expected to look similar to the iPhone 17 Pro and iPhone 17 Pro Max, but there will still be many year-over-year changes, with rumored features including a smaller Dynamic Island, 5G via satellite, and more. Apple is expected to unveil the iPhone 18 Pro, iPhone 18 Pro Max, ...
iPhone 18 Pro and Pro Max Feature

'Apple Upgrade' Program Reportedly Launching Next Week

Tuesday July 21, 2026 8:30 am PDT by
Apple and Klarna are partnering on a new "Apple Upgrade" program set to launch in the U.S. on Tuesday, July 28, according to Bloomberg's Mark Gurman. The program will allow you to finance most iPhone, iPad, Mac, and Apple Watch models, with a 24-month term for iPhones and Apple Watches and a 36-month term for iPads and Macs. Customers will be able to pay off the device early during the term, ...
iPhone 18 Pro Deep Red Feature

iPhone 18 Pro Launching in Two Months With These 12 New Features

Tuesday July 21, 2026 6:22 am PDT by
It is now mid-July, and that means the iPhone 18 Pro and iPhone 18 Pro Max are now just two months away. The devices are expected to look similar to the iPhone 17 Pro and iPhone 17 Pro Max, but there will still be many year-over-year changes, with rumored features including a smaller Dynamic Island, 5G via satellite, and more. Apple is expected to unveil the iPhone 18 Pro, iPhone 18 Pro Max, ...