On CNBC's "Fast Money," DeWalt said that FireEye has been at the center of a number of cyber-attacks against the U.S. this year. They flagged the intrusion of into Target's computer system, discovered three major threats affecting Microsoft Internet Explorer users and they revealed one of the five Chinese military members that the U.S. government has now charged with espionage.
But the biggest threat to the U.S. could be yet to come.
"We're seeing a leveling of knowledge that's rising almost monthly right now. Iranian organizations have these capabilities now. What we're finding is that sophistication is going up. The ability to bring down organizations like the Las Vegas Sands casino in a very swift blow with destructive kinds of natures behind it shows that the sophistication is going up, the capability is getting higher," he said. "The world is getting a little more dangerous."
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