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MIHAI1984
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Could little green men be hacking into your computer?
A scientist at a top U.S. physics lab thinks scanning the skies for signs of life leaves earthling computers wide open to virus attacks from space.
Richard Carrigan is careful to note his claim of a security threat to Earth isn't sponsored by his employer, the Fermi National Accelerator Laboratory in Illinois.
But he writes in a space journal that SETI, the project that invites people to run their computers non-stop in a search for life on other planets, may be inviting alien viruses to Earth.
If astronauts ever go to Mars, we'll quarantine them afterwards in a check for harmful germs, he says.
So why aren't we as careful with our computers?
The "SETI hacker" hypothesis works like this: Tens of thousands of volunteers leave their computers running to scan through vast amounts of data from SETI.
The network is called . The signals are radio waves from space, and the SETI supporters hope that amid all the random background (radio waves from stars), there may be a signal from some distant civilization.
But Carrigan warns such a signal might carry a virus, which would then spread to Earth computers.
"The probability of a contaminated SETI signal is difficult to estimate; but if we never consider it the chance of infection is not zero," he writes. Then there's radio signalling, which has already told a good part of our galaxy that we're here, he argues.
"An intelligent system 50 light years away detecting Earth's first radio signals could have broadcast a return signal that would now be reaching Earth," Carrigan writes. "There are about 400 stars within this 50-light-year sphere."
He adds that "TV transmitters on Earth can be detected one light year away with contemporary technology."
Carrigan submitted his ideas to Nature, a major science journal. It turned down a chance to publish them.
A Nature editor explained: "While the subject does cross interdisciplinary lines this is not the main criterion we use for selection. Rather, papers should report deep new physical insights. . . . . We have been unable to identify such aspects in the paper. The general premise of the manuscript even lacks some conceptual novelty, as it has already been explored in the book 3001, the Final Odyssey by Arthur C. Clarke."
But physicists and space lovers are weighing in on science blogs with comments on the hacker theory and questions: Will space aliens use Macs or PCs?
"We have bigger things to worry about. Those don't need to worry about aliens. They have to worry about their neighbour who is trying to get into the computer with malicious intent," said Patrick Lyons, manager of instructional innovation at Carleton University in Ottawa.
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