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Computer spy methods discovered

SAN FRANCISCO (Reuters) — By monitoring the flashes of LED lights on electronics equipment and the indirect glow from monitors, scientists in the United States and the United Kingdom have discovered ways to remotely eavesdrop on computer data.
Optical signals from the little flashing LED (light-emitting diode) lights, usually red and dotting everything from modems to keyboards and routers, can be captured with a telescope and processed to reveal all the data passing through the device, Joe Loughry, a computer programmer at Lockheed Martin Space Systems in Denver, told Reuters Wednesday
It requires little apparatus, can be done at a considerable distance, and is completely undetectable," he writes in his paper, "Information Leakage from Optical Emanations." "In effect, LED indicators act as little free-space optical data transmitters, like fiber optics but without the fiber."
Not every LED-enabled device is at risk, though. Affected is equipment used in low-speed, long-distance networks typically found in proprietary networks, such as ATM (automated teller machines) at banks, as opposed to corporate local area networks or home Internet connections, Loughry said.
He said he was able to collect a strong optical signal from about 22 yards, using optical sensor equipment.
"It is interesting to walk around downtown at night in a large city and look up at the glass windows and you see a lot of computers," Loughry said. "I've seen racks of equipment with LEDs on them visible from the street. That's kind of what got me to pursue this."
Loughry began his research on LEDs in 1994 when he was a graduate student at Seattle University. Asked how computer researchers could have overlooked for so long something that literally stares them in the face, he said: "I guess nobody ever looked at it before.
"I was working very late one night and waiting for a long file transfer to complete and I was just staring at these lights on the front of the modem and started to wonder if there was anything there," said Loughry.

The solutions are easy — locate equipment away from windows, put black tape over LEDs or de-activate them when not in use. Equipment manufacturers also can modify the devices.
The paper is scheduled to be published later this year in the scientific journal for the Association for Computing Machinery, called "ACM Transaction on Information and System Security."
His co-author is his former professor, David Umphress, now a software engineering professor at Alabama's Auburn University.

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Computer spy methods discovered

SAN FRANCISCO (Reuters) — By monitoring the flashes of LED lights on electronics equipment and the indirect glow from monitors, scientists in the United States and the United Kingdom have discovered ways to remotely eavesdrop on computer data.
Optical signals from the little flashing LED (light-emitting diode) lights, usually red and dotting everything from modems to keyboards and routers, can be captured with a telescope and processed to reveal all the data passing through the device, Joe Loughry, a computer programmer at Lockheed Martin Space Systems in Denver, told Reuters Wednesday.

Total bullshit!

"It requires little apparatus, can be done at a considerable distance, and is completely undetectable," he writes in his paper, "Information Leakage from Optical Emanations." "In effect, LED indicators act as little free-space optical data transmitters, like fiber optics but without the fiber."
Not every LED-enabled device is at risk, though. Affected is equipment used in low-speed, long-distance networks typically found in proprietary networks, such as ATM (automated teller machines) at banks, as opposed to corporate local area networks or home Internet connections, Loughry said.
He said he was able to collect a strong optical signal from about 22 yards, using optical sensor equipment.

Bullshit. LED response time is not fast enough even for 56K modem, if it blinked for every bit, it would be a solid glow. If we connect at 52,000 bps (which is max allowed by FCC, despite modems saying 56.6). We will be 0,0000019 seconds per transition, which is 1.9 microseconds, when normal LED response time is about 1 ms, which is 2000 times slower. Fiber optics use special laser LEDs that have a very fast resonse time.

"It is interesting to walk around downtown at night in a large city and look up at the glass windows and you see a lot of computers," Loughry said. "I've seen racks of equipment with LEDs on them visible from the street. That's kind of what got me to pursue this."

Any serious data center has all stuff hidden with closed-circuit cameras.

Loughry began his research on LEDs in 1994 when he was a graduate student at Seattle University. Asked how computer researchers could have overlooked for so long something that literally stares them in the face, he said: "I guess nobody ever looked at it before.
"I was working very late one night and waiting for a long file transfer to complete and I was just staring at these lights on the front of the modem and started to wonder if there was anything there," said Loughry.

The solutions are easy — locate equipment away from windows, put black tape over LEDs or de-activate them when not in use. Equipment manufacturers also can modify the devices.
The paper is scheduled to be published later this year in the scientific journal for the Association for Computing Machinery, called "ACM Transaction on Information and System Security."
His co-author is his former professor, David Umphress, now a software engineering professor at Alabama's Auburn University.

Just another stupid way to scare already scared average american Joe. That guy is a lamer and his method is stupid. The best he will be able to capture is crackling of my remote control LED or the digital optical out of my CD player. Any serious router is built with that in mind and no data will be compromised with switch or router LED glow.
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