In-Q-Tel was founded in 1999 as a nonprofit that would bridge the gap between the technology needs of the CIA and emerging commercial technology. Today, the venture firm -- generally viewed as the investment arm of the CIA -- is investing millions of taxpayer dollars in dozens of startups. Not surprisingly, most of these firms develop security technologies. In-Q-Tel doesn't reveal exactly how much it invests in its chosen startups, but amounts typically total up to $3 million. Read on to find out which security firms have received In-Q-Tel funding.