David Petraeus and Paula Broadwell evidently used a trick used by terrorists years ago to conceal their lurid emails to one another.
They shared a Gmail account.
Both had the login and password to the account.
So Petraeus would write a draft and never actually send it, but rather, it would sit in an electronic "Dropbox" that Broadwell could then go in and read.
An intelligence analysts told 10News the drafts folder trick.
Was used by Al Queda during the infancy of the internet.
Dr. Alijandra Mogilner told 10 news it's ironic the head of U-S intelligence would employ a terrorist trick for his personal use.