A U.S. shield against foreign spam and hackers: national security or censorship? While the government vigilantly patrols our physical borders, it is doing precious little to control our electronic ones. Consider this: someone trying to bring fresh fruit from Europe into the United States will be stopped by an agent of the U.S. Department of Agriculture. But there`s nothing to protect you from the electronic damage wrought by an infected Microsoft Word file sent to you by some computer hacker in Iraq. Full Story