Osama bin laden doesn't have a phone connection or internet connection in computer (That helped CIA analysts figure out there was something fishy about his home: why would a rich person living in an expensive compound not be connected to the internet?) in his compound, so he saved all emails in the flash drives and give it to a trusted person or courier who travel long to go to a cyber cafe where he can use an internet and sent all emails from the flash drives. Laden also received emails by reversed process.

The Navy SEAL team reportedly hauled away 100 flash memory drives after they killed bin Laden. The military has used those to apparently chronicle bin Laden’s dealings with contacts around the world. It isn’t clear if the flash drives were encrypted or not. But as the intelligence experts uncover the email addresses and other electronic details, they can query internet service providers via subpoenas. That could lead to exposure of more agents of Al-Qaeda. The cache of electronic documents is huge, and the AP says the U.S. has hired more Arabic translators to try to get through all of the data.