Walters later sent a follow-up e-mail to Jonathan Wald, advising him not to bother following up with the college graduate, since she did not have an appropriate U.S. visa.

CNN: Syria's U.N. ambassador rips criticism of his daughter

He can be reached via e-mail at Jonathan.

CNN: Web pioneers lay foundation for cyber-communities

"I am in the process of updating security policies and am also working with center CIOs on additional measures recommended by US-CERT to mitigate removable media risks, " wrote chief information officer Jonathan Pettus in an e-mail to employees.

FORBES: Sneakergate

"The only piece of information you see is the information you already know - that might be a Facebook name, a Twitter id or e-mail address, " says Jonathan Grubin, head of Send Social.

BBC: Real life postage that just needs your e-mail address

"We are not allowed off of the boat despite the fact that we have no way to use the restrooms onboard, " Jonathan Evans of Reidsville, North Carolina, said in an e-mail early Thursday.

CNN: STORY HIGHLIGHTS

"We are not allowed off of the boat despite the fact that we have no way to use the restrooms on board, " Jonathan Evans of Reidsville, North Carolina, said in an e-mail early Thursday.

CNN: STORY HIGHLIGHTS