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