Security Expert: U.S. 'Leading Force' Behind Stuxnet | WAMU 88.5 - American University Radio

Security Expert: U.S. 'Leading Force' Behind Stuxnet

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One year ago, German cybersecurity expert Ralph Langner announced that he had found a computer worm designed to sabotage a nuclear facility in Iran. It's called Stuxnet, and it was the most sophisticated worm Langner had ever seen.

In the year since, Stuxnet has been analyzed as a cyber-superweapon, one so dangerous it might even harm those who created it.

In the summer of 2010, Langner and his partners went to work analyzing a malicious software program that was turning up in some equipment. Langner Communications is a small firm in Hamburg, Germany, but Langner and the two engineers with whom he works know a lot about industrial control systems. What they found in Stuxnet left them flabbergasted.

"I'm in this business for 20 years, and what we saw in the lab when analyzing Stuxnet was far beyond everything we had ever imagined," Langner says.

It was a worm that could burrow its way into an industrial control system, the kind of system used in power plants, refineries and nuclear stations. Amazingly, it ignored everything it found except the one piece of equipment it was seeking; when the worm reached its target, it would destroy it.

Langner says that the more his team analyzed the Stuxnet worm, the more they knew they were onto something big.

"We were pretty much working around the clock," he says, "because after we had the first impression of the magnitude of this, we were just like on speed or something like that. It was just impossible to go back to sleep."

Langner also realized after analyzing the Stuxnet code that it was designed to disable a particular nuclear facility in Iran. That's serious business, he figured. Some Iranian nuclear scientists, he remembered, had been mysteriously killed. Langner published his findings anyway.

"I wasn't actually scared, but this was just something I was thinking about," he says. "You know, this stuff must involve intelligence services who do some dirty work every now and then, and you can't just block that away from your personal situation when you are the guy who is the first to publish [that] this is a directed attack against the Iranian nuclear program. So there have been some frightening moments."

U.S. The Culprit?

Langner says as they dug deeper into the Stuxnet code, each new discovery left them more impressed and wondering what was coming next. He says he couldn't imagine who could have created the worm, and the level of expertise seemed almost alien. But that would be science fiction, and Stuxnet was a reality.

"Thinking about it for another minute, if it's not aliens, it's got to be the United States," he says.

The sophistication of the worm, plus the fact that the designer had inside intelligence on the Iranian facility, led Langner to conclude that the United States had developed Stuxnet, possibly with the help of Israeli intelligence.

Langner isn't shy about naming the U.S. as the Stuxnet culprit, as he stated in a recent speech at the Brookings Institution. In that speech, he also made the bigger point that having developed Stuxnet as a computer weapon, the United States has in effect introduced it into the world's cyber-arsenal.

"Cyberweapons proliferate by use, as we see in the case of Stuxnet," he said. "Several months or weeks or a year later, the code is available on the Internet for dissection by anyone who has the motivation or money to do so."

It would have to be revised, Langner says, in order to target some other industrial control system besides the one in Iran, a U.S. power plant, for example. But it could be done, and he warns that U.S. utility companies are not yet prepared to deal with the threat Stuxnet represents.

The CIA declined to comment on Langner's charge that the U.S. was "the leading force" behind Stuxnet. Homeland Security officials insist measures are being taken to defend U.S. infrastructure against cyberattack.

Copyright 2011 National Public Radio. To see more, visit http://www.npr.org/.

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